Brassica oleracea (Italica Group) 'Purple Sprouting'
vegetablePurple Sprouting Broccoli is the cold-hardy broccoli grown not for one large central head but for a long, generous succession of slender purple side-shoots, each a miniature broccoli spear on a tender, edible stem. In its traditional form it is sown in late spring or early summer, grows a large frame over the season, overwinters, and then explodes with spears in late winter and early spring when almost nothing else is producing - a celebrated hungry-gap vegetable in Britain. The spears turn green when cooked, with a sweet, nutty flavor many prefer to standard broccoli. It rewards patience with weeks of cut-and-come-again harvests.
Sun
full sun
Water
Every 4 days
Harvest
~200 days
Difficulty
medium
Lifecycle
biennial
Leaves year 1, flowers year 2
Spacing
18-24 in. apart
Planting Depth
Seed 1/2 in.; transplant up to the first leaves
Soil pH
6.5-7.5
Soil Type
Rich, firm, well-draining
Hardiness Zones
Zones 5 – 9
Grown as an annual — this range is its winter hardiness, but you can grow it for a single season in any zone.
When to Fertilize
Side-dress in late summer and again in late winter
Fertilizer
Balanced with steady nitrogen
Grow Purple Sprouting Broccoli in full sun in rich, firm, well-drained soil limed to a near-neutral pH to discourage clubroot. For the classic overwintered crop, start seed in late spring, transplant into firmed soil 18 to 24 in. apart, and let the plants build a sturdy frame before winter; they are hardy to around 10F and crop the following spring. (In short-season or very cold areas, modern strains can also be spring-sown for a same-year summer-to-fall harvest.) Keep well watered, stake tall plants in exposed sites, and net against cabbage worms and pigeons. Begin cutting when the spears are well formed but before the tiny buds open.
spring planting
Start seeds indoors
Mar 4
Transplant outdoors
Apr 1
Projected first harvest
Oct 18
fall planting
Start seeds indoors
Jul 14
Transplant outdoors
Aug 18
Projected first harvest
Mar 6
Good neighbors that attract beneficial insects or deter pests
Proactive ways to stop trouble before it starts — tap a name with an arrow for its full guide
Green caterpillars from white butterflies - cover with insect netting, hand-pick, and use Bt if needed; especially important on overwintered plants in spring
Mealy cabbage aphids hide in the growing tips - blast off with water, squash colonies, and encourage ladybugs
Cover young plants and keep them growing strongly to outpace shot-hole damage
Lime the soil to near-neutral pH, ensure good drainage, and rotate brassicas on a long cycle to avoid this soilborne disease
Harvest the spears when they are well developed and the buds are still tight, before any yellow flowers open. Cut the central spear first to trigger a flush of side-shoots, then keep cutting every few days - regular harvesting is what keeps the plant producing for weeks. Snap or cut spears about 6 in. long, taking the tender stem and leaves too, since all of it is edible. Cook lightly to keep the color and crunch; the spears are best used fresh but freeze well after a quick blanch.
Purple sprouting broccoli is rich in vitamins C and K, folate, fiber, and the antioxidant compounds (including the purple anthocyanins) common to brassicas, and the tender spears, stems, and leaves are all edible and nutritious. Sweeter and nuttier than standard broccoli, it is steamed, roasted, or stir-fried, and its great value is timing - delivering fresh homegrown greens in late winter and early spring when the garden offers little else.
For educational and informational purposes only — HomeSown is not medical, health, or other professional advice. Always positively identify any plant before handling or eating it; some plants, and some parts of otherwise-edible plants, are toxic. Consult a qualified professional before consuming or otherwise using any plant, especially if you are pregnant, nursing, taking medication, or have a health condition.
spring planting
fall planting