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Brassica oleracea var. sabellica
Award-winning kale with ruffled blue-green leaves that can be harvested from late autumn right through winter. Ideal for salads, stir-fries and smoothies.
25 Seeds
10204213
In stock
£3.79
Seed Only Delivery £2.99* | Learn More
Seed Only Delivery £2.99*
Seeds £2.99: Dispatched by our expert team within 24hrs of placing your order 7 days a week
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High Yield
Hardy
Low Maintenance
Eventual Height:
Position:
Suitable for:
Plant Type:
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Sow Indoors
Sow Outdoors
Harvest
Kale ‘Winterbor’ is an award-winning variety producing ruffled blue-green leaves that can be harvested from late autumn right through winter. Rich in vitamins, minerals and anti-oxidants, it’s ideal for salads, stir-fries and smoothies. ‘Winterbor’ is a very vigorous, high-yielding variety, and will continue to produce new leaves as the older, lower leaves ones are harvested. A deserving holder of the RHS Award of Garden Merit.
Sow indoors
Almost fill a seed tray with moist seed compost. Sow seeds thinly over the surface and lightly cover them with a little more compost. Place in the warmth 10-15°C (50-60°F) and keep moist.
Grow on
When large enough to handle transplant seedlings 5cm (2in) apart to trays of potting compost. Gradually accustom them to conditions outside for 2-3 weeks before planting out to their cropping positions 60cm (24in) apart during summer.
Sow seeds thinly in a shallow, pre-watered row. Lightly cover with a little soil. Keep soil moist until seedlings are established.
Transplant
When the seedlings have produced about four true leaves, transplant them to their cropping positions, allowing 60cm (24in) each way between plants. Firm them in and keep watered well in dry spells. Use netting to prevent damage from Cabbage White Butterfly.
How to grow
Most Brassicas can be sown indoor and outdoors, depending on variety and time of year.
Indoor – Brassicas can be grown in a greenhouse or a windowsill. Using either a shallow seed tray or one with individual modules, which does help with reducing root disturbance when potting on. Use a specific multipurpose seed sowing compost, as this will be of finer texture, have little nutrient and have an open structure. Refer to the individual seed packet for specific sowing instructions but generally sow the seed as evenly as you can, so they all have the same space between them, firm down and water. A good tip is to put the seed tray in a larger seed tray of water and let the water soak into the seed compost, rather than overhead watering which can cause the seeds to move or group together. Keep the temperature approx. 12- 20 degrees. Ensure these are hardened off before transplanting, by increasing their exposure to the outside temperature. The tray can be placed outside for an increasing amount of time each day until the seedlings are large enough to transplant.
Outdoors – You can sow in a trays similar to indoors but grow then outside. They will be slower but will naturally have hardening off before transplanting. Many can be sown in their final position and refer to the seed packet for specific conditions. Often you may have to thin seedlings out, removing any weak ones or ones that are not in their final spacings. Use a straight edge like a wooden plank to space out the plants correctly. Making a small v shaped trough in the soil, drop the seed in and then cover and water in.
Brassica Seeds - Transplanting
You can transplant the seedlings from indoor or outdoor seed trays, when several true leaves appear. The seedling leaves appears quickly but then the true leaves start to form from the growing tip. Plants should be about 10-15cm tall and will be 5- 6 weeks old. Using a dibber and trying to disturb the roots as least as possible, lift the seedlings by their true leaves and not the delicate stem. Make a deep hole and lower the roots until the lowest leaves are at ground level. Brassicas like to be firm, so planting them deep then firming the soil well around them, will benefit the growth of the plant. A good tip is to fill the hole with water and let the soil fill around the roots, then firm the soil around it.
Why Marshalls Garden
Soil Type
Sow seeds into seed sowing compost for fast and healthy germination
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