{ "names": { "common": { "de": "Rhabarber", "en": "Rhubarb" }, "plural": { "de": "Rhabarber", "en": "Rhubarbs" }, "botanical": "Rheum", "botanical_author": "L.", "scientific_synonyms": [ "Rhabarbarum" ], "synonyms": { "de": [ "Speiserhabarber", "Gemüserhabarber" ], "en": [ "pie plant", "garden rhubarb" ] }, "common_synonyms": { "de": [ "Echter Rhabarber" ], "en": [ "culinary rhubarb" ] }, "historical_names": { "de": [ "Rehabarbarum" ], "en": [ "rha" ] }, "misspellings": { "de": [ "Rababer", "Rhababer" ], "en": [ "rubarb" ] }, "international_names": { "fr": [ "rhubarbe" ], "es": [ "ruibarbo" ], "it": [ "rabarbaro" ], "pl": [ "rabarbar" ] }, "ambiguous_names": [ { "name": "Rhubarb", "language": "en", "shared_with": [ "Bog rhubarb (Petasites hybridus)" ], "clarification": { "de": "Bezieht sich hier auf die Gattung Rheum, nicht auf die Pestwurz.", "en": "Refers to the genus Rheum, not the butterbur species." } } ], "search_terms": { "de": [ "Rhabarber", "Rheum", "Knöterichgewächs" ], "en": [ "rhubarb", "Rheum", "Polygonaceae" ] } }, "taxonomy": { "kingdom": "Plantae", "clades": [ "Angiosperms", "Eudicots", "Caryophyllales" ], "order": "Caryophyllales", "family_botanical": "Polygonaceae", "family": { "de": "Knöterichgewächse", "en": "Buckwheat family" }, "family_id": "polygonaceae", "subfamily": "Polygonoideae", "tribe": "Rumiceae", "genus": "Rheum", "hybrid_status": "not_hybrid", "related_crops": [ "Rumex", "Fagopyrum esculentum" ] }, "classification": { "main_group": "Vegetables", "sub_group": "Perennial Vegetables", "crop_group": "Stalk Vegetables", "life_cycle": "Perennial", "perennial": true, "woody": false, "tree": false, "shrub": false, "edible_parts": { "de": [ "Blattstiele" ], "en": [ "leaf stalks", "petioles" ] }, "nutrient_group": "low_calorie" }, "calendar": { "sowing_indoor": { "months": [ 2, 3 ], "earliest_month": 2, "latest_month": 3, "notes": { "de": "Vorkultur in Töpfen möglich, aber Teilung der Wurzelstöcke ist üblicher.", "en": "Sowing in pots possible, but division of rootstocks is more common." } }, "sowing_outdoor": { "months": [ 3, 4 ], "earliest_month": 3, "latest_month": 4, "notes": { "de": "Direktsaat selten empfohlen; Jungpflanzen bevorzugt.", "en": "Direct sowing rarely recommended; young plants preferred." } }, "planting_out": { "months": [ 3, 4, 10, 11 ], "earliest_month": 3, "latest_month": 11, "notes": { "de": "Beste Pflanzzeit ist das zeitige Frühjahr oder der Herbst.", "en": "Best planting time is early spring or autumn." } }, "harvest": { "months": [ 4, 5, 6 ], "earliest_month": 4, "latest_month": 6, "notes": { "de": "Ernte traditionell bis zum Johannistag (24. Juni).", "en": "Harvest traditionally until St. John's Day (June 24th)." } }, "month_tasks": { "1": [ { "de": "Ruhephase; Bodenruhe einhalten.", "en": "Dormancy phase; maintain soil rest." } ], "2": [ { "de": "Vorbereitung der Pflanzlöcher mit Kompost.", "en": "Prepare planting holes with compost." } ], "3": [ { "de": "Pflanzung neuer Rhabarberstöcke; Düngung etablierter Pflanzen.", "en": "Planting new rhubarb crowns; fertilizing established plants." } ], "4": [ { "de": "Beginn der Ernte bei Treibrhabarber; Mulchen.", "en": "Start of harvest for forced rhubarb; mulching." } ], "5": [ { "de": "Hauptanteil der Ernte; Blütenansätze frühzeitig entfernen.", "en": "Main harvest period; remove flower stalks early." } ], "6": [ { "de": "Letzte Ernte bis zum 24. Juni; danach Regenerationsdüngung.", "en": "Last harvest by June 24th; followed by regeneration fertilization." } ], "7": [ { "de": "Ausreichend wässern für die Knospenbildung des Folgejahres.", "en": "Water sufficiently for next year's bud formation." } ], "8": [ { "de": "Unkrautkontrolle und ggf. Mulchschicht erneuern.", "en": "Weed control and renew mulch layer if necessary." } ], "9": [ { "de": "Vorbereitung für die Herbstpflanzung oder Teilung.", "en": "Preparation for autumn planting or division." } ], "10": [ { "de": "Teilung alter Stöcke (alle 7-10 Jahre).", "en": "Division of old crowns (every 7-10 years)." } ], "11": [ { "de": "Abgestorbene Blätter entfernen; Frostschutz mit Kompost.", "en": "Remove dead leaves; frost protection with compost." } ], "12": [ { "de": "Winterruhe; Markierung der Standorte prüfen.", "en": "Winter dormancy; check markers of plant locations." } ] }, "month_tasks_structured": { "3": [ { "task": "fertilizing", "label": { "de": "Grunddüngung", "en": "Base fertilization" }, "priority": "high", "months": [ 3 ], "estimated_effort": "low", "notes": { "de": "Reichlich Kompost oder organischen Langzeitdünger ausbringen.", "en": "Apply plenty of compost or organic long-term fertilizer." } } ], "6": [ { "task": "harvesting", "label": { "de": "Ernteende", "en": "End of harvest" }, "priority": "high", "months": [ 6 ], "condition": "before June 24th", "estimated_effort": "medium", "notes": { "de": "Ernte beenden, damit die Pflanze für das nächste Jahr Kraft sammeln kann.", "en": "Stop harvesting to allow the plant to regain strength for next year." } } ] } }, "book_content": { "intro_text": { "de": "Rhabarber ist ein unverwüstlicher Klassiker im Frühlingsgarten. Als mehrjährige Dauerkultur liefert er über viele Jahre hinweg säuerlich-erfrischende Stiele für Kompott und Kuchen.", "en": "Rhubarb is an indestructible classic of the spring garden. As a long-lived perennial, it provides tart and refreshing stalks for compotes and cakes for many years." } }, "structured_month_tasks": { "3": [ { "task": "planting", "label": { "de": "Rhabarber pflanzen", "en": "Planting rhubarb" }, "priority": "medium", "months": [ 3, 4 ], "estimated_effort": "medium", "notes": { "de": "Wurzelknospen nur flach mit Erde bedecken.", "en": "Cover root buds only lightly with soil." } } ], "10": [ { "task": "propagation", "label": { "de": "Wurzelteilung", "en": "Root division" }, "priority": "medium", "months": [ 10, 11 ], "estimated_effort": "high", "notes": { "de": "Große Stöcke mit dem Spaten teilen; jedes Teil braucht eine Knospe.", "en": "Divide large crowns with a spade; each part needs a bud." } } ] }, "cultivation_specs": { "seed": { "seed_depth_cm_min": 1, "seed_depth_cm_max": 2, "light_germinator": false, "dark_germinator": false, "cold_germinator": false, "stratification_needed": false, "pre_soaking_recommended": true, "germination_temp_c_min": 15, "germination_temp_c_max": 20, "germination_days_min": 14, "germination_days_max": 21, "seed_lifespan_years_min": 2, "seed_lifespan_years_max": 3, "direct_sowing_possible": true, "pre_culture_recommended": true }, "spacing": { "plant_spacing_cm_min": 100, "plant_spacing_cm_max": 150, "row_spacing_cm_min": 100, "row_spacing_cm_max": 150, "recommended_density_per_sqm_min": 0.5, "recommended_density_per_sqm_max": 1, "min_bed_width_cm": 100, "square_foot_gardening_spacing": "1 per 4-9 square feet (not ideal)", "spacing_notes": { "de": "Rhabarber braucht viel Platz; pro Pflanze mindestens 1 m² einplanen.", "en": "Rhubarb needs a lot of space; plan at least 1 m² per plant." } }, "growth_dimensions": { "height_cm_min": 60, "height_cm_max": 120, "width_cm_min": 100, "width_cm_max": 150, "root_depth_cm_min": 50, "root_depth_cm_max": 100, "root_spread_cm_min": 60, "root_spread_cm_max": 100, "growth_speed": "medium", "final_size_notes": { "de": "Blütenstände können bis zu 2 Meter hoch werden.", "en": "Flower stalks can reach up to 2 meters in height." } }, "temperature": { "min_growing_temp_c": 5, "optimal_temp_c_min": 15, "optimal_temp_c_max": 22, "max_heat_tolerance_c": 30, "soil_temp_for_sowing_c_min": 12, "soil_temp_for_sowing_c_optimal": 18, "frost_sensitive": false, "late_frost_sensitive": true, "heat_tolerance": "medium", "cold_tolerance": "very_high", "temperature_notes": { "de": "Winterhart; benötigt Kältereiz (Vernalisation) für den Austrieb.", "en": "Hardy; requires a period of cold (vernalization) for sprouting." } }, "water": { "water_need": "high", "critical_water_phases": { "de": [ "Austrieb", "Blattentwicklung", "Nach der Ernte" ], "en": [ "Sprouting", "Leaf development", "After harvest" ] }, "drought_tolerant": false, "drought_sensitivity": "high", "waterlogging_sensitive": true, "mulching_recommended": true, "water_notes": { "de": "Gleichmäßige Feuchtigkeit wichtig; Mulchen hilft gegen Austrocknung.", "en": "Consistent moisture is important; mulching helps prevent drying out." } }, "nutrition": { "nutrient_group": "heavy_feeder", "heavy_feeder": true, "medium_feeder": false, "light_feeder": false, "nitrogen_need": "high", "phosphorus_need": "medium", "potassium_need": "high", "calcium_need": "medium", "magnesium_need": "low", "compost_recommended": true, "mulching_recommended": true, "fertilizer_sensitivity": "low", "nutrition_notes": { "de": "Starker Zehrer; jährliche Gaben von Stallmist oder Kompost im Frühjahr und nach der Ernte.", "en": "Heavy feeder; annual applications of manure or compost in spring and after harvest." } }, "container": { "container_suitable": true, "min_pot_volume_l": 40, "recommended_pot_volume_l": 60, "min_pot_depth_cm": 50, "min_pot_diameter_cm": 50, "plants_per_container_min": 1, "plants_per_container_max": 1, "drainage_required": true, "repotting_needed": true, "container_notes": { "de": "Nur in sehr großen Kübeln dauerhaft möglich; regelmäßige Düngung kritisch.", "en": "Only possible long-term in very large containers; regular fertilization is critical." } }, "support": { "needs_support": false, "support_recommended": false, "climbing": false, "vining": false, "trellis_recommended": false, "training_required": false, "support_notes": { "de": "Selbsttragend, keine Stützen erforderlich.", "en": "Self-supporting, no supports required." } }, "cultivation_modes": { "outdoor_bed_suitable": true, "raised_bed_suitable": true, "container_suitable": true, "balcony_suitable": false, "greenhouse_suitable": false, "polytunnel_suitable": false, "indoor_suitable": false, "windowsill_suitable": false, "hydroponic_possible": false, "permaculture_suitable": true, "no_dig_suitable": true }, "yield_density": { "yield_per_plant_min": 2, "yield_per_plant_max": 5, "yield_unit": "kg", "yield_per_sqm_min": 2, "yield_per_sqm_max": 6, "yield_reliability": "high", "yield_notes": { "de": "Ertrag steigt mit dem Alter der Pflanze; volle Ernte erst ab dem 3. Jahr.", "en": "Yield increases with plant age; full harvest only from the 3rd year onwards." } } }, "site": { "exposure": { "de": "Sonnig bis halbschattig", "en": "Sunny to semi-shade" }, "shelter_requirement": { "de": "Gering; windtolerant", "en": "Low; wind tolerant" } }, "soil": { "type": { "de": "Mittelschwer, tiefgründig, humos", "en": "Medium-heavy, deep, humus-rich" }, "ph_min": 5.5, "ph_max": 7.0, "drainage": { "de": "Gut wasserdurchlässig, aber wasserspeichernd", "en": "Well-drained but moisture-retentive" } }, "watering": { "frequency": { "de": "Regelmäßig, besonders bei Trockenheit und während der Ernte", "en": "Regular, especially during drought and harvest" } }, "nutrition": { "strategy": { "de": "Starke Düngung im März und eine Folgedüngung nach der Ernte im Juni.", "en": "Heavy fertilization in March and a follow-up fertilization after harvest in June." } }, "cultivation_planning": { "succession_sowing": { "possible": false }, "bed_planning_notes": { "de": "Dauerkultur; bleibt 8-10 Jahre am selben Standort.", "en": "Perennial crop; stays in the same location for 8-10 years." }, "rotation_priority": "high", "interplanting_potential": "low", "mechanization_relevance": "low" }, "crop_rotation": { "rotation_years": 8, "preceding_crops": { "de": [ "Leguminosen", "Puffbohnen", "Gründüngung" ], "en": [ "Legumes", "Broad beans", "Green manure" ] }, "succeeding_crops": { "de": [ "Schwachzehrer", "Salat", "Radieschen" ], "en": [ "Light feeders", "Lettuce", "Radishes" ] }, "notes": { "de": "Rhabarber ist eine Dauerkultur und sollte 8-10 Jahre am selben Platz bleiben; danach Boden für mindestens 4-6 Jahre von Knöterichgewächsen freihalten.", "en": "Rhubarb is a perennial crop and should stay in the same spot for 8-10 years; afterwards, keep the soil free of buckwheat family plants for at least 4-6 years." } }, "companion_planting": { "approach": "Static perennial placement with high-nutrient demand neighbors.", "good_neighbors": [ { "slug": "brassica", "name": { "de": "Kohlarten", "en": "Brassicas" }, "reason": { "de": "Beide haben ähnliche Nährstoffansprüche.", "en": "Both have similar nutrient requirements." }, "relationship_type": "beneficial" }, { "slug": "allium", "name": { "de": "Lauchgewächse", "en": "Alliums" }, "reason": { "de": "Können helfen, bestimmte Schädlinge abzuwehren.", "en": "May help deter certain pests." }, "relationship_type": "beneficial" } ], "bad_neighbors": [ { "slug": "helianthus-annuus", "name": { "de": "Sonnenblumen", "en": "Sunflowers" }, "reason": { "de": "Konkurrenz um Licht und Nährstoffe.", "en": "Competition for light and nutrients." }, "relationship_type": "competitive" } ], "companion_scores": [ { "target_slug": "brassica", "score": 4 } ], "design_rules": { "de": [ "Genügend Abstand zu Gehölzen halten wegen Wurzelkonkurrenz.", "An den Rand des Gemüsebeetes pflanzen, um andere Kulturen nicht zu beschatten." ], "en": [ "Keep sufficient distance from woody plants to avoid root competition.", "Plant at the edge of the vegetable garden to avoid shading other crops." ] }, "notes": { "de": "Aufgrund der enormen Blattmasse verdrängt Rhabarber im direkten Umkreis fast alle anderen Pflanzen.", "en": "Due to its massive leaf area, rhubarb displaces almost all other plants in its immediate vicinity." } }, "deficiencies": { "nitrogen": { "name": { "de": "Stickstoffmangel", "en": "Nitrogen deficiency" }, "symptoms": { "de": [ "Hellgrüne bis gelbe Blätter", "Kümmerwuchs" ], "en": [ "Pale green to yellow leaves", "Stunted growth" ] } } }, "problems": { "flowering": { "name": { "de": "Vorzeitiges Blühen", "en": "Bolting / Flowering" }, "cause": { "de": "Stress oder Alter der Pflanze", "en": "Stress or plant age" }, "impact": { "de": "Reduziert den Stängelertrag", "en": "Reduces stalk yield" } } }, "problem_management": { "common_pest_groups": { "de": [ "Blattläuse", "Wühlmäuse" ], "en": [ "Aphids", "Voles" ] }, "common_disease_groups": { "de": [ "Blattfleckenpilze", "Fäulniserreger" ], "en": [ "Leaf spot fungi", "Rot pathogens" ] }, "prevention_principles": { "de": [ "Staunässe unbedingt vermeiden.", "Ausgewogene Düngung sicherstellen.", "Abgestorbenes Laub im Herbst entfernen." ], "en": [ "Strictly avoid waterlogging.", "Ensure balanced fertilization.", "Remove dead foliage in autumn." ] }, "diagnosis_notes": { "de": "Häufige Probleme entstehen durch zu dichte Pflanzung oder Nährstoffmangel nach der Erntezeit.", "en": "Common problems arise from planting too closely or nutrient deficiencies after the harvest season." } }, "disease_graph": { "scope": "Fungal and physiological issues", "profiles": [ { "slug": "crown-rot", "severity": "high", "conditions": { "de": [ "Schwere Böden", "Staunässe" ], "en": [ "Heavy soils", "Waterlogging" ] }, "affected_parts": { "de": [ "Wurzelstock", "Stängelbasis" ], "en": [ "Crown", "Stalk base" ] }, "prevention": { "de": [ "Drainage verbessern", "Nicht zu tief pflanzen" ], "en": [ "Improve drainage", "Do not plant too deep" ] }, "organic_control": { "de": [ "Befallene Pflanzen entfernen und im Restmüll entsorgen" ], "en": [ "Remove infected plants and dispose of in household waste" ] } } ], "diagnostic_rules": [ { "symptom": { "de": "Blätter werden gelb und welken trotz feuchtem Boden", "en": "Leaves turn yellow and wilt despite moist soil" }, "possible_causes": [ "Crown Rot (Phytophthora)", "Nitrogen Deficiency" ], "first_checks": { "de": [ "Basis des Herzens auf Fäulnis prüfen", "Düngungshistorie kontrollieren" ], "en": [ "Check base of the crown for rot", "Review fertilization history" ] } } ], "prevention_strategy": { "cultural": { "de": [ "Ausreichender Pflanzabstand", "Mulchen mit Kompost" ], "en": [ "Adequate spacing", "Mulching with compost" ] }, "monitoring": { "de": [ "Regelmäßige Kontrolle der Blattunterseiten im Frühjahr" ], "en": [ "Regular inspection of leaf undersides in spring" ] }, "organic_first_response": { "de": [ "Blütenstände frühzeitig ausbrechen", "Brennnesseljauche zur Stärkung" ], "en": [ "Snap off flower stalks early", "Nettle wash for strengthening" ] }, "notes": { "de": "Ein gesunder Rhabarber ist sehr robust gegen die meisten Krankheiten.", "en": "A healthy rhubarb plant is very robust against most diseases." } } }, "phenology": { "stages": { "de": [ "Winterruhe", "Austrieb der roten Blattknospen", "Blattentfaltung", "Blütenstandsbildung", "Einzug der Blätter im Spätherbst" ], "en": [ "Winter dormancy", "Sprouting of red leaf buds", "Leaf expansion", "Flower stalk development", "Dying back of foliage in late autumn" ] }, "notes": { "de": "Rhabarber benötigt eine winterliche Kälteperiode (Vernalisation), um im Frühjahr kräftig auszutreiben.", "en": "Rhubarb requires a period of winter cold (vernalization) to sprout vigorously in spring." } }, "flowering_pollination": { "flowering_period": { "de": "Mai bis Juni", "en": "May to June" }, "flower_color": { "de": "Grünlich-weiß bis rötlich", "en": "Greenish-white to reddish" }, "removal_recommended": true, "removal_reason": { "de": "Blütenstände sollten entfernt werden, um die Energie der Pflanze in die Stielbildung zu lenken.", "en": "Flower stalks should be removed to direct the plant's energy into stalk production." } }, "pollination": { "summary": { "de": "Windbestäubung ist vorherrschend, Insektenbesuch ist jedoch häufig.", "en": "Wind pollination is predominant, though insect visitation is common." }, "pollinator_required": false, "self_fertility": "self_fertile", "pollinator_notes": { "de": "Die Bestäubung ist für die Ernte der Stiele nicht relevant, nur für die Samengewinnung.", "en": "Pollination is not relevant for stalk harvest, only for seed production." } }, "harvest": { "harvest_period": { "de": "April bis Juni", "en": "April to June" }, "first_harvest_year": 2, "full_harvest_year": 3, "harvest_method": { "de": "Stiele an der Basis mit einem Ruck herausdrehen, nicht abschneiden.", "en": "Pull and twist stalks from the base; do not cut them." } }, "harvest_details": { "harvest_frequency": { "de": "Wöchentlich während der Saison; nie mehr als ein Drittel der Blätter gleichzeitig ernten.", "en": "Weekly during the season; never harvest more than one-third of the leaves at once." }, "harvest_indicators": { "de": [ "Stiele haben die gewünschte Dicke erreicht", "Blattspreiten sind voll entfaltet", "Stiele wirken prall und fest" ], "en": [ "Stalks have reached desired thickness", "Leaf blades are fully expanded", "Stalks appear turgid and firm" ] }, "post_harvest_handling": { "de": "Blätter sofort entfernen, da sie dem Stiel Feuchtigkeit entziehen; Stielbasis sauber halten.", "en": "Remove leaves immediately as they draw moisture from the stalk; keep the stalk base clean." } }, "storage": { "storage_temperature_c": 0, "storage_humidity": "high", "storage_methods": { "de": [ "In ein feuchtes Tuch gewickelt im Kühlschrank", "Eingefroren (roh oder blanchiert)", "Eingekocht" ], "en": [ "Wrapped in a damp cloth in the refrigerator", "Frozen (raw or blanched)", "Canned or preserved" ] } }, "storage_details": { "general_storage_category": { "de": "Kurzzeitlagerung (Frisch) oder Langzeitlagerung (Frost/Konserve)", "en": "Short-term (fresh) or long-term storage (frozen/preserved)" }, "storage_life": { "de": "Im Kühlschrank ca. 1 Woche; tiefgekühlt bis zu 12 Monate.", "en": "In the refrigerator about 1 week; frozen up to 12 months." }, "processing_options": { "de": [ "Einfrieren", "Einkochen als Kompott", "Verarbeitung zu Konfitüre", "Saftgewinnung" ], "en": [ "Freezing", "Canning as compote", "Making jam", "Juicing" ] } }, "processing_use": { "peeling_required": { "de": "Bei jungen Stielen meist nicht nötig; faserige ältere Stiele schälen.", "en": "Usually not necessary for young stalks; peel fibrous older stalks." }, "main_uses": { "de": [ "Kuchenbelag", "Kompott", "Desserts", "Sirup" ], "en": [ "Cake topping", "Compote", "Desserts", "Syrup" ] } }, "kitchen_usage": { "flavor_profile": { "de": "Säuerlich, erfrischend, herb", "en": "Tart, refreshing, astringent" }, "pairing_suggestions": { "de": [ "Erdbeeren", "Vanille", "Ingwer", "Waldmeister" ], "en": [ "Strawberries", "Vanilla", "Ginger", "Sweet woodruff" ] }, "culinary_notes": { "de": "Aufgrund des hohen Säuregehalts oft mit viel Zucker oder süßen Früchten kombiniert.", "en": "Often combined with plenty of sugar or sweet fruits due to high acidity." } }, "safety_and_edibility": { "edible_parts": { "de": [ "Blattstiele" ], "en": [ "Leaf stalks (petioles)" ] }, "inedible_or_caution_parts": { "de": [ "Blattspreiten (hoher Oxalsäuregehalt)", "Wurzelstock" ], "en": [ "Leaf blades (high oxalic acid content)", "Rhizome/Rootstock" ] }, "toxicity_notes": { "de": "Blätter sind aufgrund hoher Oxalsäurekonzentration giftig. Der Oxalsäuregehalt in den Stielen steigt nach Ende Juni (Johannistag) stark an.", "en": "Leaves are toxic due to high oxalic acid concentration. Oxalic acid levels in stalks increase significantly after late June (St. John's Day)." }, "raw_consumption": { "de": "In kleinen Mengen möglich, kann aber Zahnschmelz angreifen; Kochen reduziert verfügbare Oxalsäure.", "en": "Possible in small amounts, but can affect tooth enamel; cooking reduces available oxalic acid." } }, "seed_saving": { "difficulty": "medium", "isolation_distance_m": 500, "seed_viability_years": 2, "harvest_method": { "de": "Samenstände braun und trocken werden lassen, dann abschneiden.", "en": "Allow seed heads to turn brown and dry, then cut them." } }, "seed_saving_advanced": { "genetic_diversity_notes": { "de": "Samenvermehrter Rhabarber ist genetisch variabel; Sortenechtheit ist nur durch Teilung garantiert.", "en": "Seed-propagated rhubarb is genetically variable; varietal purity is only guaranteed through division." }, "vernalization_required": true, "crossing_risks": { "de": "Verschiedene Rheum-Arten können sich kreuzen.", "en": "Different Rheum species can cross-pollinate." } }, "varieties": [ { "slug": "holsteiner-blut", "name": "Holsteiner Blut", "characteristics": { "de": "Rote Stiele, grünes Fleisch, milder Geschmack, sehr ertragreich.", "en": "Red stalks, green flesh, mild flavor, very productive." }, "oxalic_acid_content": "medium" }, { "slug": "frambozen-rood", "name": "Frambozen Rood", "characteristics": { "de": "Erdbeer-Rhabarber, durchgehend rote Stiele, feines Aroma.", "en": "Strawberry rhubarb, solid red stalks, fine aroma." }, "oxalic_acid_content": "low" }, { "slug": "victoria", "name": "Victoria", "characteristics": { "de": "Klassische Sorte, spät reifend, dicke grün-rote Stiele.", "en": "Classic variety, late ripening, thick green-red stalks." }, "oxalic_acid_content": "high" } ], "woody_crop_details": { "renewal_pruning_relevance": "high", "notes": { "de": "Rhabarber ist botanisch kein Gehölz, wird aber aufgrund seiner mehrjährigen Natur und Wurzelstockpflege oft ähnlich wie Beerensträucher im Gartenplan geführt.", "en": "Rhubarb is botanically not woody, but due to its perennial nature and crown maintenance, it is often managed similarly to berry bushes in garden planning." } }, "pruning_logic": { "scope": "maintenance", "system": "crown-care", "remove": { "de": [ "Blütenstände (sofort nach Erscheinen)", "Abgestorbene Blätter im Spätherbst", "Kranke oder verfaulte Teile des Wurzelstocks" ], "en": [ "Flower stalks (immediately upon appearance)", "Dead leaves in late autumn", "Diseased or rotted parts of the crown" ] }, "preserve": { "de": [ "Zentrales Herz der Pflanze", "Mindestens zwei Drittel der Blätter während der Ernteperiode", "Wurzelknospen beim Einpflanzen" ], "en": [ "Central heart of the plant", "At least two-thirds of the leaves during harvest period", "Root buds during planting" ] }, "avoid": { "de": [ "Abschneiden der Stiele mit dem Messer (Infektionsgefahr)", "Ernte nach dem 24. Juni (Regenerationsphase)", "Beschädigung der Wurzelknospen beim Hacken" ], "en": [ "Cutting stalks with a knife (infection risk)", "Harvesting after June 24th (regeneration phase)", "Damaging root buds while hoeing" ] }, "timing_rules": [ { "season": "spring", "months": [ 3, 4, 5 ], "purpose": { "de": "Blütenentfernung", "en": "Flower removal" }, "notes": { "de": "Blütenstiele tief an der Basis ausbrechen, um Kraft für die Blattstiele zu sparen.", "en": "Snap off flower stalks deep at the base to save energy for leaf stalks." } }, { "season": "autumn", "months": [ 10, 11 ], "purpose": { "de": "Verjüngung durch Teilung", "en": "Rejuvenation through division" }, "notes": { "de": "Alle 7-10 Jahre den Wurzelstock teilen und neu pflanzen.", "en": "Divide and replant the crown every 7-10 years." } } ], "cut_location_rules": { "de": [ "Stiele werden an der Basis herausgedreht", "Schnitt nur bei der Wurzelteilung am Rhizom" ], "en": [ "Stalks are twisted out at the base", "Cutting only applied to the rhizome during root division" ] }, "intensity_rules": { "max_removal_percent": 33, "recovery_period_days": 365 }, "decision_tree": [ { "question": { "de": "Erscheint ein dicker, runder Stängel ohne Blattspreite?", "en": "Is a thick, round stalk appearing without a leaf blade?" }, "action": { "de": "Sofort ausbrechen (Blütenstand)", "en": "Break off immediately (flower stalk)" } } ], "tool_hygiene": { "de": "Spaten vor der Wurzelteilung reinigen, um Bodenpilze nicht zu übertragen.", "en": "Clean spade before root division to avoid transferring soil-borne fungi." }, "diagram_requirements": { "de": [ "Darstellung der korrekten Drehtechnik beim Ernten", "Schema der Wurzelstockteilung" ], "en": [ "Illustration of the correct twisting technique during harvest", "Diagram of crown division" ] }, "notes": { "de": "Die wichtigste 'Schnittmaßnahme' ist das Ausbrechen der Blüten, um den Ertrag zu sichern.", "en": "The most important 'pruning' measure is snapping off flowers to ensure yield." } }, "ecology": { "pollinator_value": "medium", "wildlife_value": "low", "biodiversity_notes": { "de": "Die großen Blätter bieten Bodenlebewesen Schatten und Feuchtigkeit. Die Blütenstände ziehen diverse Insekten an, sollten aber für den Ertrag meist entfernt werden.", "en": "Large leaves provide shade and moisture for soil organisms. Flower stalks attract various insects, though they are usually removed to prioritize yield." } }, "practical_notes": [ { "de": "Im ersten Standjahr sollte gar nicht geerntet werden, um die Pflanze zu kräftigen.", "en": "Do not harvest at all in the first year to allow the plant to establish strength." }, { "de": "Beim Ernten die Stiele niemals schneiden, da die Schnittstellen im Boden faulen können.", "en": "Never cut stalks when harvesting, as the cut ends can rot in the soil." } ], "seasonal_content": { "spring": { "de": "Zeit für die Grunddüngung und den Start der Ernte.", "en": "Time for base fertilization and start of harvest." } }, "slug": "rhabarber", "sources": [ { "title": "Wikidata entity", "url": "https://www.wikidata.org/wiki/Q7217716", "publisher": "Wikidata", "date_accessed": "2026-05-15" }, { "title": "GBIF species match", "url": "https://api.gbif.org/v1/species/match?name=Rheum&kingdom=Plantae", "publisher": "GBIF", "date_accessed": "2026-05-15" }, { "title": "Deutschsprachige Wikipedia: Rhabarber (Gattung)", "url": "https://de.wikipedia.org/wiki/Rhabarber_(Gattung", "publisher": "Wikipedia", "date_accessed": "2026-05-15" }, { "title": "English Wikipedia: Rheum (plant)", "url": "https://en.wikipedia.org/wiki/Rheum_(plant", "publisher": "Wikipedia", "date_accessed": "2026-05-15" }, { "title": "Deutschsprachige Wikipedia: Rhabarber (Gattung)", "url": "https://de.wikipedia.org/wiki/Rhabarber_(Gattung)", "publisher": "Wikipedia", "date_accessed": "2026-05-15" }, { "title": "English Wikipedia: Rheum (plant)", "url": "https://en.wikipedia.org/wiki/Rheum_(plant)", "publisher": "Wikipedia", "date_accessed": "2026-05-15" } ] }