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Jelitto · Seeds of more than 3700 different species and varieties
RUELLIA humilis
Plant Description
| Life Cycle: | Perennial |
| Family: | Acanthaceae |
| Origin: | North America: Pennsylvania to Florida, west to Nebraska and Texas |
| Special Features: | A colorful, underused species with clusters of lavender-blue flowers. Large flowering. Drought resistant species adapted to open, dry woodlands, rocky slopes and dry prairies. Once germinated this is an easy-to-grow perennial and very durable. Single erect stems at first, becoming multi-branched. |
| Basic Colour: | (blue) |
| Flower Colour: | pale blue-violet |
| Natural Flowering Period: | July - September |
| Winter Hardiness Zones: |
Z4 - Z8
|
| Foliage: | lanceolate to ovate, deep green |
| Height with Flowers: | 40 cm |
| Spacing between Plants: | 40 cm |
| Soil Requirements: | dry |
| Location: | |
| Usage: | for the rock garden |
| Portion weight: | 0.4 Gram |
| Grams per 1000 seeds: | 6.25 Gram |
| Seeds per Gram (does not correspond to the number of plants!): |
160 |
| Gram to get 1000 plants (if sown directly into pots etc. you will need a larger quantity): |
15 Gram |
| Sowing Rates/Trays: | 2 - 3 per cell |
| Plug tray recommended size(s): | open flats / 72 |
| 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 autumn - early spring |
| Sowing to Germination: | 8 - 10 weeks |
| Germination to Transplant: | 4 - 8 weeks |
| Transplanting to Potting: | 6 - 10 weeks |
| Container Size(s): | 1 plug per 8/9 cm (3 1/2") / 1-2 plugs per 11/12 cm (4 1/2") |
| Fertilizer: | Medium (150-200 ppm) |
