Sprouting broccoli, cabbages, cauliflowers, calabrese, kales and brussels sprouts are all members of the same family (Brassica oleraceae), and will all cross with each other. They won’t cross with turnips, swedes, oriental brassicas or mustard greens. In addition, they are mainly self-incompatible – which means that in order to get seed, insects have to carry pollen from one plant to another to pollinate the flowers. Because of this, you can’t simply grow your broccoli or cabbages for seed in an insect proof cage to avoid crossing.
So long as you only seedsave from one member of the family in any given year, you can grow as many other brassicas as you like without problems so long as you don’t let them flower.
Happy Birthday To My Blog!
I’ve now been blogging every week for a whole year and what a year it has been. I’ve gone from having a keen interest in gardening to completing a Permaculture Design Course and catapulting myself full on in to the world of Permaculture. I’ve changed the way that I grow things dramatically and have quadrupled my yield. Learn more
Fantastic week in the garden. The weather has been glorious, lots of sunshine and new life. The magnolia tree is budding, there is blossom on the apricot and I have seen a ladybird and a bee already. Best of all, it has brought everyone outside…. it’s been brilliant to see all of the neighbours. Learn more