Species

Brassica oleraceaWild Cabbage

14 other cultivars

fruit vegetable

Broccoli

Brassica oleracea 'italica'

The Story

Plant Bio

Brassica oleracea is a highly diverse European maritime species that has given rise to numerous familiar cool-season crops. These biennial plants develop thick, fleshy stems and glaucous, blue-green foliage with wavy margins before producing terminal flowering structures.

'Italica' is distinguished by its upright, branching habit and the production of a dense, edible central head composed of immature, green flower buds. Following the harvest of this primary terminal cluster, the plant frequently develops smaller secondary lateral shoots from the leaf axils.

Uses & Benefits:

The glaucous, ruffled blue-green foliage provides strong structural form and cool-toned color in mixed plantings.

Produces highly nutritious, edible immature flower heads and secondary side shoots for culinary use.

When allowed to bolt, the bright yellow flowers provide nectar for generalist bees, hoverflies, and butterflies.

SpeciesBrassica oleraceaWild Cabbage

Essentials

At a Glance

Plant Type

Fruit Vegetable

Height

35"

Width

24"

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8, 9, 10

Water

Medium

Humidity

Moderate

Lifespan

Annual

Native To

Europe

Toxicity

Non-toxic

Bloom period

Spring – Summer

In flower about 6 months of the year

Planting

How to Grow

Sow seeds indoors six to eight weeks before the last spring frost, or direct-sow in late summer for a fall crop.
Transplant seedlings into rich, organic loam with a pH between 6.0 and 7.0, spacing them 18 inches apart.
Maintain consistent soil moisture and side-dress with a nitrogen-rich organic fertilizer every three to four weeks.
Harvest the central head while the buds are tight and green by cutting the stem at a slant five to six inches below the head.

Pro Tip

Planting too late in spring exposes the crop to summer temperatures above 80°F, which triggers premature bolting and ruins head formation; always rotate crops on a three-to-four-year cycle to prevent the buildup of soil-borne pathogens like clubroot.

Keep It Thriving

Care Guide

Do

Keep soil consistently moist to prevent drought stress and premature buttoning.
Apply a thick layer of organic mulch to cool the soil and retain moisture.
Rotate brassica crops to a new garden plot every three to four years.

Don't

Do not allow the soil to dry out completely, as water stress permanently damages crop quality.
Do not plant into waterlogged soils that promote rapid root rot.
Do not prune back into old, woody stems expecting new vegetative growth.

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Fertilize
Harvest
Pest Check
Plant

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Vegetable GardensEdible LandscapingRaised BedsContainer Gardening

Companion Plants

Allium cepa Salvia

Multiply

Propagation Methods

Good to Know

Common Questions

Broccoli questions

What zones can Broccoli grow in?

Broccoli is hardy in USDA Zones 4–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Broccoli deer resistant?

Not reliably. Deer may browse Broccoli, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does Broccoli bloom?

Broccoli typically blooms in spring through summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Broccoli need full sun?

Broccoli does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.