Kale Seeds Winterbor Seeds

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Packet of Kale Winterbor SeedsKale Winterbor is a very frost resistant, medium-tall variety for Autumn and Winter harvest. It produces dark blue-green finely curled leaves.

Average Packet Contents: 25 Seeds


Kale Seeds Winterbor Grow Notes
When to Sow Seeds: April to July - Cell Trays or Outside
Germination Temperature: 12 ℃ Cover Seeds: Lightly
Time to Germination: 4 -7 Days Frost Hardy: Yes
Spacing Between Plants: 50cm Row Spacing: 50cm
Plant Height: 80cm Planting Position: Sun


Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Plant Out:                        

Seed Sowing

Seeds can be sown from March to June outdoors directly into a well prepared seed bed or they can be sown indoors. It’s advisable however, not to sow if conditions are particularly hot and dry. They can also be sown in modules or seed trays in a cool greenhouse, where they are likely to get a much better start than those sown outdoors.

Seeds sown in seed trays or modular trays indoors will germinate quicker and produce healthy seedlings. Use a seed compost to fill the trays and sow the seed sparingly over the surface of the compost. With modular trays you can sow one or two seeds per module, keeping only the healthiest of seedlings. Cover the seeds with fine sifted compost or vermiculite to a depth of about 1cm then lightly tamp the surface using a flat compost presser. Gently water the seed boxes using a watering can with a fine rose attachment.

The seeds should germinate within 5-8 days and once large enough to handle, they can be transplanted into 75cm pots and moved to a cooler position with plenty of light. After about 10-14 days from transplanting to pots, and prior to planting into their permanent positions, move the seedlings into a cold frame, cloche or a sheltered area of the garden for a further 10 days so that they can become acclimatised.

Planting Out

This task is usually carried during June or July, depending on when the seeds were sown. For seedlings grown outdoors, which should now be around 5-7cm high, you can either thin them out leaving one healthy plant every 45cm or carefully lift and move to their permanent growing positions, transplanting at 45cm apart both ways. Plants that have been grown indoors and acclimatised can also be planted into their permanent positions at a space of 45cm apart all round. Ensure the plants are well supported in the soil by carefully firming the soil around the base of the stems and then water well with a watering can and fine rose attachment.


Plants will be ready for harvesting from October and right through the winter. It’s best to gather a few young leaves from the crowns of several plants, which will encourage new shoots to grow. These will be ready for picking again in February. Cut the leaves cleanly with a knife rather than breaking or pulling them off the plants. Continue to harvest the youngest leaves only, throughout the winter months but avoid the larger, tougher leaves, which will not be at all pleasant to eat.

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Customer Reviews
Kale Seeds Winterbor
Write a Review and share your opinions!
2 Reviews:

Best I have grown for a long time
16 January 2014  |  Arthur

A far superior variety than dwarf curled, which was almost a bonsai plant when I grew it two years ago. These seeds grow strong bushy plants about two foot six tall which have tasty leaves. They must have a strong root system as they stood up straight in all the gales.
Highly reccommended..

The Wonder-Plant
02 February 2013  |  Steph

I planted out 12 polytunnel-raised Winterbor seedlings in a net-covered 4*4 bed when the rain finally stopped last June (2012). 8 of them grew quickly into a 2' tall edible forest-like canopy. The other 4 would have been 4 too many; as it was, we ended up giving away carrier-bags full of kale to anyone who would take them during the late summer months! We're still getting meals out of those 8 plants now, at the start of February, but probably not for much longer as they aren't producing new leaves so quickly now. They have survived heavy rain, frost, snow and high winds to come this far.

I know kale doesn't suit everybody, but if you like it and want to replace the bags of curly kale from the supermarket, this is the plant to go for. It's been my big success story during the perma-rains of 2012!