📍 Bloomsbury, NJ · Zone 7a · Last frost Friday, April 10, 2026
✏️ ChangeWhen to Plant Radish in Bloomsbury, New Jersey (08804)
Location
Bloomsbury, New Jersey
ZIP Code
08804
USDA Zone
7a
Last Frost
Friday, April 10, 2026
📅 Your 2026 Planting Dates
Direct Sow Outdoors
Friday, February 27, 2026
Based on last frost Friday, April 10, 2026 · Zone 7a
Pro tip: Sow Radish directly outdoors 6 weeks before your last frost date.
🌿 Plant Details
☀️ Growing Requirements
☀️
Sun
Full Sun to Partial Shade
💧
Water
Regular (keep moist)
↔️
Spacing
2" apart
🌱
Planting Depth
0.5" deep
Seeds typically germinate in 3-7 days
Ready to Plant Radish in Bloomsbury?
Get your seeds now so they're ready by Friday, February 27, 2026.
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🤝 Good Companions
⚠️ Avoid Planting Near
Full Companion Planting Guide for Radish
See which plants help Radish thrive, which to keep away, and raised bed layout tips →
🛠️ Supplies You'll Need
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Common Radish Varieties
Popular cultivars to look for at your local nursery or seed supplier.
Cherry Belle
Round, bright red radish that matures in just 22 days; the classic spring radish.
French Breakfast
Elongated red-tipped radish with milder flavor and crisp, white interior.
Watermelon (Shinrimei)
Chinese daikon with green exterior and stunning magenta-pink interior; mild and sweet.
Daikon
Long, white Japanese radish used fresh, pickled, or cooked; much larger and milder than spring types.
Common Radish Problems
What to watch for — and how to fix it before it spreads.
Pests
Tiny beetles make hundreds of small holes in leaves; seedlings can be badly damaged.
Use row covers immediately after sowing; apply diatomaceous earth; sow densely and sacrifice outer rows.
Fly larvae tunnel into roots, leaving rusty tunnels and stunting plants.
Use row covers from sowing; delay planting spring radishes until after peak fly emergence.
Diseases
Yellow patches on leaves with gray spores beneath; common in cool, wet springs.
Improve airflow; avoid overhead watering; rotate with non-brassica crops.
Interior of roots turns gray-black from Aphanomyces fungus; common in wet, acidic soils.
Raise soil pH to 6.5–7.0; rotate crops; use certified disease-free seed.
Common Mistakes
Radishes bolt immediately in heat, going straight to flowers without forming a root.
Sow in early spring and again in late summer/fall; avoid sowing when temps will exceed 75°F.
Radishes go pithy and hollow quickly after reaching mature size.
Check spring radishes starting at day 20–25; harvest when roots reach pencil-width to marble-size.
🌾 Seed Saving Guide
🟢 EasyWhen to Harvest Seed
Let plants bolt and seed pods dry completely on the plant until papery and tan.
Processing
Thresh dried pods to release round seeds, winnow to remove chaff.
Seed Viability
Up to 5 years when stored cool, dark, and dry.
Pro Tip
Radishes cross readily between varieties and with wild radish — isolate by 1000 feet for pure seed.
Raised Bed Planting Guides
A 4×8 bed fits 36 per sq ft of Radish. See plant counts, spacing grids, and companion pairings for every bed size →
Frequently Asked Questions
When should I plant Radish in Bloomsbury, New Jersey? +
In Bloomsbury (Zone 7a), direct sow Radish outdoors around Friday, February 27, 2026.
What is the last frost date for Bloomsbury, New Jersey? +
The average last spring frost date for Bloomsbury, New Jersey (ZIP 08804) is around Friday, April 10, 2026. This is based on NOAA climate normals for USDA Zone 7a.
How long does Radish take to grow? +
Radish typically matures in about 25 days from direct sowing. In Bloomsbury, that means you can expect harvest around Friday, February 27, 2026 plus 25 days.
Should I start Radish indoors or direct sow in New Jersey? +
Radish does best when direct sown outdoors. In Bloomsbury, sow directly around Friday, February 27, 2026.
Other Plants for Bloomsbury
Growing Radish in Zone 7a
Radish (Rhaphanus sativus) is a popular garden vegetable. In Bloomsbury, New Jersey, which is in USDA Hardiness Zone 7a, you should direct sow seeds around Friday, February 27, 2026.
Your average last frost date is Friday, April 10, 2026. Radish grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.