Radish seeds - German Giant

German Giant radish seeds produce a robust, fast-growing annual plant with a larger root size compared to many common radish types. This variety is well suited to cool-season cultivation and performs best when planted in spring or fall. Plants adapt well to a range of temperate climates and are commonly grown in garden beds, raised beds, and larger containers where sufficient soil depth is available. German Giant radishes prefer loose, well-drained soil and consistent moisture to support uniform root development and steady growth.

Features

• Fast-growing annual root vegetable

• Larger root size compared to standard radish types

• Adapted to cool-season growing conditions

• Suitable for garden beds, raised beds, and containers

• Performs well with consistent soil moisture

Specifications

• Scientific name: Raphanus sativus

• Common name (US): Radish

• Seed type / variety: German Giant

• Growth habit: Annual root vegetable

• USDA hardiness zones: 2 to 11 (grown as an annual)

• Planting season: Spring and fall

• Sowing season:

  • Spring: March to May

  • Fall: August to October

• Germination time and conditions: 5 to 10 days; cool to moderate soil temperatures with evenly moist soil

• Sunlight requirements: Full sun to partial shade

• Soil requirements: Loose, well-drained soil with moderate organic matter

• Watering needs: Moderate; maintain consistent soil moisture

• Mature plant size: 8 to 14 inches tall

• Plant spacing: 2 to 3 inches apart