SkirretSium sisarum

Skirret

Skirrets

1. Apium sisarum
2. Sisarum sisaroideum
3. Sium brevifolium
4. Sium podolicum
5. Selinum sisarum
6. Sium sisaroideum
7. Seseli sisarum
8. Sium sisarum var. lancifolium
9. Carum sisarum
10. Sium sisarum subsp. sisaroideum
11. Sium sisarum var. vulgare
12. Pimpinella sisaroidea
13. Berula lancifolia
14. Pimpinella sisarum

1. Crummock
2. Sciréad

1. Crummock
2. Sciréad

1. Crummock
2. Sciréad

1. Skirwhit
2. Skirwort

1. Skirret
2. Sium sisarum

1. Tracheophyta
2. Spermatophytina
3. Angiospermae
4. Eudicotyledoneae
5. Asteridae
6. Campanulidae

Carrot family

1. Daucus carota
2. Pastinaca sativa

1. Root

Skirret (Sium sisarum) is a forgotten perennial winter root vegetable belonging to the carrot family. Highly esteemed during the Middle Ages and the Renaissance, it yields fan-shaped clusters of pencil-thick roots. After the first winter frosts, these develop a delightfully sweet flavor reminiscent of chestnuts and parsnips. Being completely frost-hardy, it provides fresh harvests straight from the winter garden.

1. Tasksowing

   Label

   Sowing outdoors or in pots

   Prioritymedium

   Months

   1. 3
   2. 4

   Estimated effortlow

   Notes

   Seeds require patience; germination can take up to 4 weeks.

1. Taskharvest

   Label

   Start of harvest period

   Prioritymedium

   Months

   1. 10
   2. 11
   3. 12

   Estimated effortmedium

   Notes

   After the first frosts, the roots develop a particularly sweet flavor.

Prefers cool, moist soil conditions during summer.

Deeply loosened and stone-free, otherwise the roots will fork excessively.

The plant survives, but root quality deteriorates significantly due to woodiness.

Incorporate into the soil in early spring before new growth starts.

Since skirret can be grown as a perennial, it is ideal for permanent bed corners or forest gardens.

1. Legumes
2. Peas
3. Beans
4. Leeks

1. Carrots
2. Parsnips
3. Celery
4. Parsley

1. Heavy feeders
2. Brassicas
3. Potatoes
4. Lettuce

1. Apiaceae
2. Carrots
3. Fennel

Due to its close relationship with carrots and parsnips (Apiaceae), a strict crop rotation must be observed to prevent soil-borne pests and diseases.

1. Slugpotassium_deficiency

   Name

   Potassium deficiency

   Symptoms

   1. Necrosis on leaf margins
   2. Poorly developed, thin, and fibrous roots

   Remedy

   1. Application of comfrey liquid manure
   2. Application of sulfate of potash or wood ash in moderation

1. Slugdrought_woody_roots

   Name

   Drought stress

   Symptoms

   1. Roots become woody, extremely fibrous, and lose their sweet flavor

   Remedy

   1. Ensure even watering
   2. Apply a mulch layer to retain soil moisture
2. Slugroot_forking

   Name

   Root forking

   Symptoms

   1. Root clusters fork awkwardly around stones or compacted soil layers

   Remedy

   1. Deep soil loosening before planting
   2. Carefully sieve out stones

1. Root-feeding insect larvae
2. Slugs during early growth stages

1. Foliage fungi (powdery mildew, septoria)
2. Root rot under waterlogged conditions

1. Never use fresh manure, as it attracts pests.
2. Consistent weed control during the first months due to slow initial growth.
3. Keep the soil continuously moist but well-drained.

Stunted foliage usually indicates either root-zone damage from drought or maggot feeding.

1. Slugchamaepsila_rosae

   Severitymedium_to_high

   Conditions

   1. Sheltered locations
   2. Lack of wind movement
   3. Proximity to carrot beds

   Affected parts

   1. Main roots
   2. Root crown

   Prevention

   1. Apply fine insect mesh from April onwards
   2. Choose windy spots

   Organic control

   1. Remove infested plants immediately
   2. Meticulously clear root debris after harvest

1. Symptom

   Foliage turns reddish-yellow and wilts without obvious water deficiency.

   Possible causes

   1. chamaepsila_rosae
   2. drought_woody_roots

   First checks

   1. Check root crown for feeding tunnels
   2. Check soil moisture at a depth of 15 cm

1. Leaf color
2. Root structure during test digging
3. Growth rate

1. Spring sprouting of pinnate foliage starting March/April
2. Umbel flower development in mid-summer from July to August
3. Seed ripening and gradual dieback of foliage in late summer/autumn
4. Winter dormancy of the subterranean root clusters with absolute frost hardiness

As a perennial herb, the plant dies back completely above ground in late autumn and reliably sprouts again in early spring.

1. 7
2. 8

White

Compound umbel

1. 10
2. 11
3. 12
4. 1
5. 2

Late autumn to winter

Continuously as needed throughout the entire winter frost period.

1. Complete dieback of the above-ground foliage in late autumn
2. First frost events, which significantly increase the sugar content in the roots

Carefully remove soil from harvested root clusters and wash them. Avoid snapping the brittle roots. The woody central core found in older roots is removed either before or after cooking.

1. in_ground
2. root_cellar
3. freezing

Best kept fresh in the ground or stored in a cool root cellar.

Stored in the ground, it keeps all winter; once harvested, it lasts about 1 to 2 weeks in the refrigerator.

1. Fresh consumption or storage in moist sand within a root cellar
2. Blanching followed by freezing of the cleaned root pieces

Usage as a sweet winter root vegetable

Very sweet, aromatic, reminiscent of a blend of parsnip, celery, and chestnut.

Boiled, steamed, sautéed in butter, or prepared as a creamy soup. Young roots can also be grated raw into salads.

1. Roots
2. Young shoots in spring

1. Older, woody flowering stems
2. Seeds (not toxic, but unpalatable)

No known toxicity. While wild foraging carries a risk of confusion with toxic relatives like Sium latifolium (great water-parsnip), controlled cultivation in garden beds poses no such risk.

Completely safe; young, tender roots are a sweet treat when grated raw.

Cut the umbels in late summer as soon as the seeds turn brown, then allow them to dry fully indoors.

Cross-pollinates with other individuals of the same species (Sium sisarum). It does not hybridize with wild Apiaceae species like carrots or parsnips, as they belong to different genera.

Rub the dried umbels between your hands to dislodge the seeds. Separate from chaff using sieves and winnowing.

Since skirret is an herbaceous perennial and not a woody plant, grafting and classic training systems do not apply. Pruning is limited to routine cultural maintenance.

The large white compound umbels in mid-summer are an excellent food source for hoverflies, parasitic wasps, and solitary wild bees, actively boosting beneficial insect populations.

1. Patience during sowing: Seeds often germinate erratically and can take up to 4 weeks to emerge.

2. Keep soil stone-free: In stony ground, the naturally slender roots will fork and become difficult to process.

Time for dividing established root crowns or transplanting young seedlings started indoors since February.

Ensure consistent irrigation and maintain a thick mulch layer to prevent roots from turning woody.

Foliage dies back. The main harvesting season for this sweet root crop begins after the first frosts.

Continuous harvesting during frost-free periods. The remaining root crowns are completely hardy in the ground.