Cabbage 'F1 Stonehead' produces densely packed medium sized, green round heads. Weighing around 2 to 3 kilos (4 to 6 lbs), this excellent variety produces cabbages with creamy white hearts and a lovely crisp texture.
It is a compact variety that is suitable for high density production and is especially useful for smaller gardens and veg plots as they can be planted closer together at spacings as little as 30cm (12in).
Stonehead aptly describes this type of cabbage, as its head is harder and more solid than other species.
This mid to late season variety takes 50 to 70 days to mature. It can be sown successionally from February to mid June for harvesting from June right through to October. Resistant to black rot and Fusarium yellows, it holds well in the garden without splitting, so there is no need to hurry the harvest.
Cabbage 'F1 Stonehead' has been awarded the RHS Award of Garden Merit. (AGM).
Prepare the site:
All brassica crops grow best in partial-shade, in firm, fertile, free-draining soil. Start digging over your soil as soon as you can brave the elements. Remove any stones you find and work in plenty of well-rotted manure or compost. Tread on the soil to remove air pockets and to make the surface firm. Brassicas will fail if the soil is too acidic; add lime to the soil if necessary, aiming for a pH of 6.5 to 7.5.
Sowing: Sow successionally from February to mid June
Nearly all brassicas should be planted in a seedbed or in modules under glass and then transferred. Seeds should be sown thinly, as this reduces the amount of future thinning necessary and potential risk from pests.
Sow seeds 1.25cm (½in) deep and space 15 to 20cm (6 to 8in) between rows.
Once the seeds have germinated, thin the seedlings to 7.5cm (3in) between each plant. After germination, seedlings will often be ‘leggy’, so plant them as deep as possible to really anchor them into the soil.
Cabbage seedlings are ready for transplanting when they are between 6 and 8cm high (2½ to 3in). Water the day before moving, and keep well-watered until established. Plant firmly, close together for small heads and wider apart for larger cabbages, around 30 to 45cm (12 to 18in) apart. Cabbage seedlings are ready for transplanting when they are between 6 and 8cm high (2½ to 3in). Water the day before moving, and keep well-watered until established. Plant firmly, close together for small heads and wider apart for larger cabbages, around 30 to 45cm (12 to 18in) apart.
Clear away any yellow leaves. Feed the plants as they near maturity with a foliar feed.
Harvest: June to October.
Earliest heads can be cut, leaving the stump in the ground to produce a second crop of small leafy heads.
Brassicas are affected by a wide range of pests and diseases, especially the fungal disease, club root. The roots become stubby and swollen and can develop wet rot, while leaves become yellow and wilt, causing severe stunting of growth. Remove any infected plants from the ground and destroy. Make sure the soil is adequately limed and well drained.
Rotate your crops annually to avoid disease. Don't grow brassicas on the same plot more often than one year in three, as moving the crop helps avoid the build up of soil pests and diseases
Good Companions: Aromatic Herbs, Celery, Beetroot, Onion Family, Spinach, Chard
Mint: Effective against Cabbage White Butterflies, Aphids / Flea Beetles.
Thyme:To ward off that nasty Cabbage Worm.
Also useful: Sage, Oregano, Borage, Chamomile and Nasturtium.
Bad Companions: Dill, Strawberries, Runner Beans and Tomato.
In the wild, the Brassica oleracea plant is native to the Mediterranean region of Europe, and is somewhat similar in appearance to a leafy canola plant.
Without detailed knowledge of plant breeding or genetics, simple selection by the people growing the plant over seven thousand years that had the features that they most desired, led to the development of six dramatically different vegetables. Although they appear very different, kale, cabbage, kohlrabi, cauliflower, broccoli and brussels sprouts are all the same species, Brassica oleracea.
As time passed, some people began to express a preference for those plants with a tight cluster of tender young leaves in the centre of the plant at the top of the stem. Because of this preference for plants in which there were a large number of tender leaves closely packed into the terminal bud at the top of the stem, these plants were selected and propagated more frequently.
A continued favouritism of these plants for hundreds of successive generations resulted in the gradual formation of a more and more dense cluster of leaves at the top of the plant. Eventually, the cluster of leaves became so large, it tended to dominate the whole plant, and the cabbage "head" we know today was born. This progression is thought to have been complete in the 1st century A.D.
Cabbage is known botanically by the name Brassica oleracea variety capitata, which translates to "cabbage of the vegetable garden with a head." (Kale plants are named Brassica oleracea variety acephala which translates to mean "cabbage of the vegetable garden without a head.")
The Latin name Brassica derives from the Celtic ‘bresic’. The species oleracea refers to a vegetable garden herb that is used in cooking.
|Average Seed Count||150 Seeds|
|Seeds per gram||320 seeds per gram|
|Common Name||Summer to Autumn Cabbage.|
|Species||olearacea, Capitata Group|
|Height||30 to 45cm (12 to 18in)|
|Spread||45 to 60cm (18 to 24in)|
|Soil||Well-drained/light, Clay/heavy, Chalky/alkaline, Dry|
|Time to Sow||February to mid June|
|Harvest||50 to 70 days|
|Time to Harvest||June to October|