Variety field guide
What to expect from Giant German
Giant German is an annual radish selection grown for fast roots, greens, succession planting, storage types, and seed saving.
Read the complete product descriptionTraits, flavor, garden use, variety notes, and the full catalog record
Discover the robust charm of Giant German Radish Seeds, a cultivar that promises a bountiful harvest of impressive roots. Known for its substantial size, this radish variety grows to a remarkable diameter, showcasing a vibrant red skin that encases its crisp, white interior. Giant German Radishes thrive in cool climates, developing best when sown in early spring or late summer.
About Giant German
Giant German is an annual selection of radish, with a rosette habit and an expected height or spread of 19–24 in. It is best suited to fast roots, greens, succession planting, storage types, and seed saving. Notable traits include harvest roots before pithiness and use tender greens where appropriate; crisp and mild when young, becoming stronger with age or stress.
When growing Giant German, judge the whole planting for trueness to type instead of selecting conclusions from one unusually large or early plant.
History and provenance
These root crops were selected in Eurasian farming traditions for rapid growth, root form, storage, greens, and cold-season use. Small salad radishes, long daikon types, turnips, and rutabagas differ in species or crop group and should not share one generic maturity or harvest description. The Giant German Radish, a robust and storied root vegetable, emerges from the fertile soils of Central Europe, particularly flourishing in the verdant fields of Germany. The name itself carries a weight of tradition: in German, \"Riesenrettich\" translates to \"giant radish,\" a nod to its impressive size and stature. Some say the grandeur of its name reflects the radish's ability to dominate the garden with its large, crisp roots; others believe it honors the historical significance of this radish in German culinary and agricultural heritage.For centuries, the Giant German Radish has been a staple in German households, celebrated not only for its size but for its peppery flavor and nutritional benefits. Local cooks would slice it thinly to add a spicy crunch to salads, sandwiches, and traditional dishes like \"Brotzeit,\" a Bavarian snack platter.
Growing facts
| Scientific name | Raphanus sativus L. |
|---|---|
| Life cycle | Annual |
| Maturity | 50-59 Days |
| Germination | 3-7 Days at 45–60 °F |
| Seed depth | 1/2 in |
| Plant height / spread | 19–24 in |
| Growth habit | Rosette |
| Spacing | 4 in between plants; 12 in between rows |
| Sunlight | Full sun |
| Soil | Sandy loam; pH 6.0–6.5 |
| Water | Moderate |
| Support | No-Support |
Starting Giant German from seed
Sow 1/2 in deep and keep the seed zone evenly moist. Expect emergence in 3-7 Days when the seed-zone temperature is near 45–60 °F. Germination preparation: Direct sow into a prepared, weed-free seedbed; avoid disturbing developing roots or dense stands. Light requirement: Cover evenly to 1/2 in. Soaking: None required. Stratification: None required. Scarification: None required.
Planting and care
Plant during spring/Fall and provide full sun. Space plants 4 in apart with 12 in between rows. Use sandy loam with a pH near 6.0–6.5, and follow a moderate watering plan. Support requirement: No-Support. Frost response: Hardy. Medium to large container or in-ground bed; avoid crowding
Harvest and use
Approximately 50-59 Days, from direct sowing to market-size roots. Weather, soil temperature, and planting method can shift the actual harvest date. Harvest: Harvest roots before pithiness and use tender greens where appropriate. Uses: Fast roots, greens, succession planting, storage types, and seed saving. Flavor: crisp and mild when young, becoming stronger with age or stress. Seed saving: Insect-pollinated radish. Best uses include fast roots, greens, succession planting, storage types, and seed saving. Flavor and eating quality: crisp and mild when young, becoming stronger with age or stress.
Saving seed
Select several healthy, true-to-type Giant German plants that match the expected rosette habit and overall plant form. Avoid saving seed only from the earliest or largest individual unless that is your deliberate selection goal. Pollination system: Insect-pollinated radish. Radish cultivars can cross through insect-carried pollen. Separate compatible varieties that may flower together, or use cages, barriers, hand pollination, or another documented control appropriate to the crop. Allow selected plants to pass the eating stage and reach full botanical seed maturity. Harvest only when seed heads, pods, or fruits have matured enough for sound seed development. Clean the seed carefully, dry it thoroughly away from direct heat, label the lot with variety and year, and store it cool, dark, and dry. Test germination before an important planting or distribution season.
Common problems
Common concerns: Flea beetles, imported cabbageworm, cabbage loopers, aphids, slugs, root maggots, and clubroot risk where the pathogen is present. Management: Use rotation, insect netting before pests arrive, regular leaf inspection, sanitation, and well-drained soil. Do not plant the same brassica family repeatedly in one bed. Diagnosis note: Similar symptoms can have different causes. Compare plants of the same age, record weather and irrigation, and use local Extension or diagnostic support before applying a control.
Frequently asked questions
Frequently Asked Questions - Giant German
When is Giant German ready? Use 50-59 Days. Approximately 50-59 Days, from direct sowing to market-size roots. Weather, soil temperature, and planting method can shift the actual harvest date.
How long does germination take? Expect 3-7 Days at about 45–60 °F. Cooler, hotter, crusted, saturated, or dry seedbeds can slow emergence.
How large does it grow? Expect about 19–24 in with a rosette habit. Space plants 4 in apart and rows 12 in apart. Support: No-Support.
Can it grow in a container? Medium to large container or in-ground bed; avoid crowding Use a container with drainage and enough volume to maintain the listed spacing and steady moisture.
Can I save seed? Insect-pollinated radish. Keep compatible varieties isolated and allow selected plants to reach full seed maturity.
