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Jelitto · Seeds of more than 3700 different species and varieties
POLEMONIUM caeruleum
Plant Description
| Life Cycle: | Perennial |
| Family: | Polemoniaceae |
| Origin: | Northern Hemisphere: meadows, riparian forests, roadsides from the hills to the mountains. |
| Special Features: | Nice ferny foliage and abundant flowers. The arrangement of the leaves on the stems looks like ladders. Reblooms after dead-heading. |
| Historical: | The species has been used in gardens since Roman. |
| Basic Colour: | (violet) |
| Flower Colour: | Lavender blue |
| Natural Flowering Period: | June - July |
| Winter Hardiness Zones: |
Z2 - Z8
|
| Foliage: | cut leaves resembling a fern frond |
| Growth Habit: | clumping |
| Height with Flowers: | 60 cm |
| Spacing between Plants: | 45 cm |
| Soil Requirements: | moist / average |
| Location: | |
| Characteristics: | medicinal plant / groundcover |
| Usage: | honey-bee food plant / suitable for cutting / flowering pot plant |
| Portion weight: | 0.166 Gram |
| Grams per 1000 seeds: | 0.83333 Gram |
| Seeds per Gram (does not correspond to the number of plants!): |
1200 |
| Gram to get 1000 plants (if sown directly into pots etc. you will need a larger quantity): |
3 Gram |
| Sowing Rates/Trays: | 2 - 3 per cell |
| Plug tray recommended size(s): | 128 / 288 |
| Sowing Direction: |
(15) Rapidly germinating, keep seed in constant moisture (not wet) with temperatures of about +20°C [68°F]. Seeds must be covered thinly. Do not cover very small seeds, but tightly press into the earth. Keep in cooler conditions after germination occurs.
|
| Best Sowing Date (northern Hemisphere, Field condition): |
Anytime |
| Sowing to Germination: | 2 - 3 weeks |
| Germination to Transplant: | 4 - 6 weeks |
| Transplanting to Potting: | 6 - 8 weeks |
| Container Size(s): | 1 plug per 8/9 cm (3 1/2") / 1-2 plugs per 11/12 cm (4 1/2") / 2-3 plugs per 15 cm (6") |
| Fertilizer: | Medium (150-200 ppm) |
