Technical production guide for growing early-sprouting / summer-sprouting broccoli, and broccoli x Asian gai lan (Brassica oleracea var. alboglabra) varieties, commonly referred to as mini broccoli, from Johnny's Selected Seeds.
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Late-Sprouting Broccoli (aka Winter-Sprouting or Purple-Sprouting Broccoli) | Tech Sheet (PDF)
Technical growing instructions for late-sprouting (aka purple-sprouting or winter-sprouting) broccoli (Brassica oleracea var. italica), from the Research & Trialing team at Johnny's Selected Seeds.