SproutSmart
SproutSmart™ Intelligent Garden Sowing

Rattail Radish

Radish
Zone 12b Save Garden

Planting Schedule

Add Rattail Radish to your garden to build a schedule and get reminders.
Botanical illustration of Rattail Radish
45d to harvest

Fragrant, peppery pods unfurl on Rattail Radish, turning the garden into a living bouquet of crisp green and soft lavender blooms. At maturity, the slender, dangling seed pods hold a tender snap and a bright, radish-sharp flavor that’s especially prized for quick pickling and lively fresh use. Grow it for its distinctive rat-tail silhouette—an edible spectacle that keeps producing as long as you harvest the pods young.

Crop Dates

Growing note: In frost-free Zone 12b, grow this cool-season crop during the cooler dry season (October–February).
MilestoneDate
Start Indoors—
ClimateFrost-Free Climate
Transplant / Sow OutdoorsOct 1st
Harvest BeginsNov 15th
Harvest EndsFeb 28th

Crop Details

TraitValue
Days to Maturity45
Sun RequirementsFull SunFull sun
Growth HabitTaproot
Support NeededNone
Planting DepthNormal
Germination Temp (°F)55
Min Soil Temp (°F)40
Min Night Temp (°F)28
Harden Off (days)Not Required

Today's Conditions

Outdoor planting for Rattail Radish in Zone 12b typically begins around 2026-10-01. Wait until soil reaches at least 40°F before transplanting Rattail Radish.

Garden Alerts

In frost-free Zone 12b, grow this cool-season crop during the cooler dry season (October–February).

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Frequently Asked Questions

How often should I water rattail radish during its main growing phase?
During the main growth (from sprouting through bulbing/pod development), keep soil consistently evenly moist—about 1 inch of water per week, adjusted for your weather. Water deeply when the top 1 inch of soil dries, because fluctuating moisture can lead to tough, poor-quality roots/pods. In full sun, check more frequently and use a light mulch to prevent the surface from drying out between waterings.
How do I know when Raphanus sativus (rattail radish) is ready to harvest?
Harvest around 45 days from sowing when the radish roots are visibly enlarged and reach their typical rattail size, and pods (if you’re growing for the seed pods) are well formed and elongated. Check a sample by gently pulling one plant: roots should feel firm, not hollow or overly fibrous. Harvest promptly once they’re ready because extended time in warm conditions can make roots tougher and reduce tenderness.
Botanical illustration of Rattail Radish

Fragrant, peppery pods unfurl on Rattail Radish, turning the garden into a living bouquet of crisp green and soft lavender blooms. At maturity, the slender, dangling seed pods hold a tender snap and a bright, radish-sharp flavor that’s especially prized for quick pickling and lively fresh use. Grow it for its distinctive rat-tail silhouette—an edible spectacle that keeps producing as long as you harvest the pods young.

Today's Conditions

Outdoor planting for Rattail Radish in Zone 12b typically begins around 2026-10-01. Wait until soil reaches at least 40°F before transplanting Rattail Radish.

Garden Alerts

In frost-free Zone 12b, grow this cool-season crop during the cooler dry season (October–February).

Sowing Tips

Soil Temperature

Direct sow or transplant when soil at planting depth holds 40°F for reliable germination and early growth.

Expert Note

Sow seed pods in warm, consistently moist soil and harvest the pods young (before they toughen) for the best flavor.