Broccoli belongs to the cruciferous vegetable family, which includes kale, cauliflower, Brussels sprouts, bok choy, cabbage, collard greens, rutabaga, and turnips.
That being said I've had a somewhat chequered history growing Broccoli as it you take your eye off it for a moment and it's a dry warm summer it bolts. For that reason and the lack of space I have favoured other vegetables over the last few years so what I have in my Seed Box is little and old
Zippy Bags (Opened Packs)
Autumn Calabrese - Unwins - Best before 2015 in a Zippy bag
Stromboli F1 - Suttons - Best before 06/2016 in an unopened packet
Autumn Calabrese - Thompson & Morgan - Seeds 100 - Sow By 2021 off Grow Your Own Magazine
So for this year as I may have additional space depending how fast I can get the new half plot ready. I will see what germination rate I get from the two packs dates 2015 & 2016 first and if not good will use the Thompson & Morgan pack with a sow by of 2021 I have, I will find space for them somewhere in the Brassica patch.
Sow Indoors - March - June
Sow Outdoors - April - June
Harvest - July October
- Outstanding Summer/Autumn variety
- Smooth, domed, heads with medium beads
- Plenty of sideshoot production once central head is cut
Germination: 5 - 10 Days
Plant Height: 450mm
Prefered Position: Full Sun
Sow thinly in a well-prepared seed bed from April to June at a depth of 13mm in rows 300mm apart. Alternatively sow in pots or a seed tray of good seed compost and cover with 6mm of compost or vermiculite at a minimum of 15C until germination that takes around 7 days.
Thin seeds ro 100mm apart when large enough to handle. Transplant to their final positions around 5 weeks later when the seedlings have four or five leaves at a distance of 500mm apart, and cover with a protective netting or fleece. For indoor sowings, at first leaf stage , prick out into individual cell trays pr 75mm pots.