Beta vulgaris subsp. vulgaris encompasses all cultivated beet forms: sugar beets, garden beets, chard, and mangels. Seeds are actually single-seeded fruits (achenes) containing 2-6 embryos.
Before sowing
Soak
18 h Soak in room-temperature water 12-24 hours to soften seed coat and wash away germination inhibitors. Helps achieve 90% germination rate.
Pre-treatment critical to overcome physical and physiological dormancy. Seeds contain endogenous inhibitors in pericarp.
Sowing
Substrate
Well-draining seed-starting mix, friable soil rich in organic matter
Depth
0_5cm
Temperature
21°C
Moisture
media
Container
Seed trays, pots with drainage, soil blocking containers
What to expect
Step 1
Pre-treat the seed
Step 2
Sow at 0_5cm · 21°C
Day 5–15
Seedlings emerge (~90%)
Tips
Germination is best at 18-24°C (optimal for uniform, rapid sprouting). Minimum 50°F (10°C) for slow germination. Keep substrate consistently moist. Avoid planting when soil temperature too cold. Pre-soaking for 12-24 hours in lukewarm water is the fastest improvement to germination rates.
Sources: Purdue Horticulture, Homesteading.blog, Sow Right Seeds, Swiss Chard germination sources
