I have failed before with brassicas from not listening to fellow allotmenteers and just planting willy nilly. Brassicas are susceptible to so many pests and diseases so taking care in the planting stage always pays off.
I was given my brassica seedlings off various fellow allotment friends so I have a mixture of cabbage and broccoli I believe! Suprise crop 🙂
Lime the soil a week or so before planting. Brassicas thrive with an alcaline pH and will prevent diseases such as club root. I’m sure there are more organic ways of doing this, but I got given some lime and let the rain sink it in.
Firm ground is important with brassicas. I believe a firm soil helps the roots stay in place and keeps the brassica strong.
A small piece of Rhubarb stem or two apparently prevents club root so I put a bit in each small hole with some Compost (to give the roots a head start).
Planting up to the first strong leaf will ensure your brassica are supported and strong. Otherwise I guarantee you will end up with spindly brassica growing to the side due to the wind etc.
One must firm the ground again after planting for the reasons outline above and heel the surrounding soil once to create a channel for water to sit and soak in. This is also important due to the soil structure you have created through stomping. Water will sit on top and be slowly absorbed. The ‘heeling’ will guarantee a water channel for water to be absorbed neer the stem and roots.
So, there you have it. All you need is some builder’s netting to prevent butterflies laying (cabbage whites)!