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Jelitto · Seeds of more than 3700 different species and varieties
SMYRNIUM perfoliatum
Plant Description
| Life Cycle: | Biennial |
| Family: | Apiaceae |
| Origin: | Eastern Mediterranean, Crimea, Middle East, naturalized in Denmark, Great Britain. |
| Special Features: | Large, green-yellow bracts, mostly monocarpic. |
| Basic Colour: | (green) |
| Flower Colour: | green-yellow |
| Natural Flowering Period: | April - May |
| Flower: | single |
| Winter Hardiness Zones: |
Z5 - Z8
|
| Foliage: | basal leaves mostly triple parted otherwise simple, narrowly lanceolate, up to 15cm, leaves on stem shorter, deep green |
| Growth Habit: | erect / richly branched / lax |
| Height with Flowers: | 60 cm |
| Spacing between Plants: | 40 cm |
| Soil Requirements: | average / humus rich, fertile / undemanding |
| Location: | |
| Characteristics: | ornamental foliage plant |
| Usage: | suitable for cutting |
| Portion weight: | 0.6 Gram |
| Grams per 1000 seeds: | 8.33333 Gram |
| Seeds per Gram (does not correspond to the number of plants!): |
120 |
| Gram to get 1000 plants (if sown directly into pots etc. you will need a larger quantity): |
25 Gram |
| Plug tray recommended size(s): | 128 |
| Sowing Direction: |
(1) Cold-germinators are still referred to as frost-germinators, although this isn’t quite correct. The sowing must be kept warm (about +18 to +22°C) [about 64 to 72°F] and moist for the first 2–4 weeks. After this period the sowing must be kept at a cold temperature (between –4 and +4°C) [between 25 and 39°F] for another 4–6 weeks. Colder temperatures of –5°C [23°F] are only advantageous for most species of the Ranunculus family. It is not so important if the temperature is higher or lower during the cooling period, but the cooling period has to be prolonged because the synthesis of the germination inducer, hormon-like acid, slows down or comes to a standstill.
|
| Best Sowing Date (northern Hemisphere, Field condition): |
late summer - late winter |
| Container Size(s): | 1 plug per 8/9 cm (3 1/2") / 1-2 plugs per 11/12 cm (4 1/2") |
| Fertilizer: | Light (100-150 ppm) |
