Coleus Rainbow Mixed - Seeds
The Rainbow variety is one of most popular of coleus. This very special blend includes a complete colour range, from cream to deep scarlet. Very easy to grow from seed and of even height, growth and size of leaves. Given a modicum of care, they will flourish from spring until frost.
With their sumptuous colours and tough constitution, coleus are ideal both as attention-getting focal points and as complements to other foliage or flowering plants. They will show their first colours in as little as two weeks. The intensity of light which the plant receives will have a direct bearing on the intensity of the foliage colouring. Some varieties of coleus may produce their best colour in light shade, while others look best in bright lighting. As happy in a container as in open ground, they are the ultimate in versatility, their uses as unlimited as your imagination.
Common name: coleus
Bloom time: Spring to Fall
Height: 12 inches
Difficulty level: Easy
Planting & Care
Sunlight: Full Shade, Part Sun
Soil: Moist, well-drained, pH 5.6 - 7.5
Temprature: Coleus should be kept at a 15-20°C (60-70°F) over winter. They will survive down to 10°C (50°F) but only if kept dry.Losses to rot and fungal diseases are high if the plants are allowed to get cold and damp.
Fertilizer: Fertilise with a diluted (50% mix) liquid fertiliser, too much feeding with high nitrogen fertilisers, encourages soft growth and poorer quality foliage.
- Sowing: Sow all year round or in Late Spring for outdoor plants Sow all year round for pot plant.
- For the garden, sow 10 to 12 weeks before the last expected frost, they will then be well developed when it is time to plant them outdoors.
- Sow seeds onto a layer of moistened, sterile potting soil in a shallow tray, do not cover as they need light to germinate.
- Cover with glass or plastic to retain moisture, until the seeds have germinated.
- Place in a warm (21°C/ 0°F), bright (not full sun) place.
- When the seedlings are large enough to handle, transplant into individual pots.
- Seedlings should always be held by a leaf, never by the stem.
- When pricking out coleuses note that larger and stronger plants often have poorer quality foliage.
- When all danger of frost is past the plants may be set out in the garden.
- Plant them twelve inches apart in rich, moist, well-drained soil.
- PruningPinch the centre stems out when the plants are 4 to 6 inches tall to induce bushier growth, and be sure to pick off the flower spikes as they form.
- For a bushy plant Continue to pinch out new shoots.
- Coleus is very durable, so you can cut your plant back severely if needed (almost back to the soil level).
Best in pots as house plants, or in the warmer conservatory, coleus can also be grown in containers or window boxes alongside other temporary summer planting. They can also look good bedded out with salvias, gaillardias and other late-summer flowers in the red-yellow end of the spectrum in warm borders.
Coleus eventually produces woody stems and can be trained as standards. To do this, pinch out side-shoots and support the stem with a 3ft cane. When the plant reaches the desired height, pinch out the top shoot and keep removing lead shoots.
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