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How to Grow Brussels Sprouts 'Bubbles'

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Brussels Sprouts 'Bubbles'

Brassica oleracea var. gemmifera

vegetable

Brussels Sprouts 'Bubbles' is a compact, early-maturing variety that produces small, tender sprouts on dwarf plants, making it ideal for small gardens and container growing. This cultivar typically reaches 12-18 inches tall and produces numerous 1-1.5 inch sprouts along the stem. It's known for its sweet flavor and improved tenderness when exposed to frost.

Looking for a specific variety?

Bubbles Jade Cross Long Island Improved Falstaff Roodnerf Catskill

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Example Brussels Sprouts 'Bubbles' timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Brussels Sprouts 'Bubbles'

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. Harvest Brussels Sprouts 'Bubbles'

    Around Jul 6

    ≈ 80 days after planting

Sample dates for Pittsburgh, PA. Sign up to get exact Brussels Sprouts 'Bubbles' dates for your own zip code.

Growing Conditions

☀️
Sun: Full sun, 6-8 hours daily minimum
💧
Water: Consistent moisture, 1-1.5 inches per week; keep soil evenly moist but not waterlogged. Drought stress can cause loose, poor-quality sprouts.
📏
Spacing: 18 inches
📅
Days to maturity: 80-90 days from transplant
🌱
Planting depth: 0.25 inches for seeds; transplant seedlings at 1-2 inches depth

Soil

Type: Well-draining loamy soil rich in organic matter
pH: 6.0-7.5
Amendments:
Compost aged manure balanced NPK fertilizer (10-10-10) lime if pH is below 6.0

Growing Zones

Find your zone →

Thrives in zones 3-9; prefers cool-season growing (55-75°F)

3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a

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Growth Stages

1

Seedling

3-4 weeks

Small green cotyledons emerge, followed by first true leaves. Plants are delicate and 2-4 inches tall.

Keep soil consistently moist but not waterlogged. Provide bright light and 65-70°F temperatures. Thin seedlings to prevent overcrowding.

2

Vegetative/Transplant

3-4 weeks

Seedlings develop 4-6 true leaves and strong root systems. Transplant size is 3-4 inches tall with established leaves.

Harden off seedlings gradually over 7-10 days before transplanting. Fertilize lightly every 2 weeks with balanced fertilizer.

3

Establishment

4-6 weeks

Plants are transplanted into garden or containers and begin growing true leaves along the stem. Plant reaches 6-12 inches tall.

Water consistently, provide mulch to retain moisture and regulate soil temperature. Monitor for pests, especially cabbage worms and aphids.

4

Sprout Development

4-6 weeks

Leaf axils along the stem swell and form tight, button-like sprouts. Plants reach full height (12-18 inches). Sprouts gradually enlarge from bottom to top.

Remove lower leaves as sprouts mature to improve air circulation and harvest access. Continue consistent watering and fertilizing every 3 weeks.

5

Harvest

4-8 weeks (ongoing harvest)

Sprouts are firm, compact, 1-1.5 inches in diameter, and deep green. Quality improves after light frost exposure.

Begin harvesting bottom sprouts when tennis-ball sized. Snap off sprouts by bending downward. Top plant for tender leaves. Continue harvesting upward as sprouts mature.

Companion Planting

Plan your garden →

Plant with:

Onion Garlic Dill Chamomile Beet Mint Thyme Borage

Avoid planting near:

Tomato Fennel Kohlrabi Strawberry Pole beans Broccoli (same pest susceptibility)

Common Pests

  • Use row covers on seedlings, handpick caterpillars, apply Bacillus thuringiensis (Bt) spray every 7-10 days, or use spinosad

  • Monitor for pale green caterpillars, apply Bt spray, encourage parasitic wasps with flowering companion plants

  • Spray with strong water stream, apply insecticidal soap or neem oil, introduce ladybugs or lacewings

  • Handpick bugs and egg clusters, use kaolin clay spray, plant trap crops like mustard nearby

  • Use row covers on young plants, apply kaolin clay, use diatomaceous earth dust, encourage beneficial predators

Uses

🍳

Roasting & Pan-frying

Culinary

Brussels sprouts can be halved, tossed with oil and seasonings, and roasted at 400°F until caramelized and tender (20-30 minutes). They develop a nutty, sweet flavor when the outer leaves crisp. [source]

🍳

Raw in Salads

Culinary

Young, tender sprouts from the 'Bubbles' variety can be thinly sliced or shaved raw into salads for a mild, slightly sweet cabbage-like flavor with a crisp texture. [source]

💊

Nutritional & Anti-cancer Properties

Medicinal

Brussels sprouts are rich in vitamin C, K, and glucosinolates, compounds that research suggests may have anti-cancer properties and support detoxification in the body. [source]

🏠

Composting & Garden Waste

Household

Outer leaves, damaged sprouts, and plant stems are excellent additions to compost piles, breaking down quickly and enriching soil with organic matter. [source]

🦋

Pollinator & Beneficial Insect Support

Wildlife

If any plants are allowed to bolt and flower, their yellow cruciferous flowers attract bees and other pollinators, while flowering plants support parasitic wasps that prey on cabbage worms. [source]

This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.

Harvest Tips

Begin harvesting sprouts when they reach 1-1.5 inches diameter and are firm and tight, typically 80-90 days after transplanting. Harvest from bottom to top, snapping sprouts downward with a quick motion. Remove yellowed or damaged outer leaves before cooking. Flavor improves significantly after the first light frost (28-32°F), which converts starches to sugars. Continue harvesting until plants decline in mid-to-late fall or until buds become loose or flower.

Fun Facts

  • 🌱 'Bubbles' is named for its compact, marble-like sprouts and dwarf plant habit, making it one of the most space-efficient Brussels sprout varieties for small gardens and containers.
  • 🌱 Brussels sprouts are actually miniature cabbages that form as axillary buds along the central stem, and the plant can produce 20-40 sprouts per stem if well-maintained.
  • 🌱 The flavor of Brussels sprouts sweetens significantly after exposure to frost because cold temperatures trigger the conversion of starches and other compounds into sugars as a natural antifreeze mechanism.

Gardening Terms

New to gardening? Learn about terms used in this guide:

Cultivar Full Sun Mulch pH Transplant True Leaves
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