How Long Should Seeds Take to Sprout? (Complete Chart)
Most vegetable seeds sprout in 5–14 days. Here’s the exact germination window for every variety in ZOMAE kits, plus what to do if yours are late.
Full Germination Chart
| Variety | Normal Window | Ideal Soil Temp | If Nothing by Day X |
|---|---|---|---|
| Radish | 4–6 days | 65–75°F | Day 8 |
| Lettuce | 7–10 days | 60–70°F | Day 12 |
| Bush Bean | 7–10 days | 70–80°F | Day 12 |
| Zucchini | 7–10 days | 70–85°F | Day 12 |
| Basil | 5–10 days | 70–80°F | Day 12 |
| Cherry Tomato | 7–14 days | 75–85°F | Day 16 |
| Cilantro | 7–10 days | 65–75°F | Day 12 |
| Parsley | 14–21 days | 65–75°F | Day 24 |
| Chives | 10–14 days | 65–75°F | Day 16 |
| Dill | 7–10 days | 65–75°F | Day 12 |
| Spinach | 7–14 days | 55–65°F | Day 16 |
| Kale | 5–10 days | 60–70°F | Day 12 |
| Carrot | 14–21 days | 65–75°F | Day 24 |
| Pepper | 10–14 days | 75–85°F | Day 18 |
| Sunflower | 7–14 days | 70–85°F | Day 16 |
| Zinnia | 5–7 days | 70–80°F | Day 10 |
| Marigold | 5–7 days | 70–80°F | Day 10 |
| Cosmos | 7–10 days | 70–80°F | Day 12 |
Why Some Seeds Are Slow
Hard seed coats. Parsley, carrots, and some flowers have tough outer layers.
Temperature sensitivity. Peppers and tomatoes need warm soil (75–85°F).
Light requirements. Lettuce needs light to germinate.
What to Do If Yours Are Late
Days 1–3: Nothing yet. Normal. Day 4–7: Radishes and beans should be up. Day 8–10: Most varieties should be up. Check the decision tree. Day 11–14: Basil, parsley, peppers may still sprout. Wait. Day 15+: Unlikely. Replant.
Common Questions
My radishes sprouted in 3 days. Is that too fast? No. Radishes are the fastest common vegetable.
My parsley has been in soil for 3 weeks. Is it dead? Maybe. Parsley can take 21 days. If 24+ days with no sign, replant.
Why did some seeds in the same pot sprout and others didn’t? Individual seeds vary. 90% germination means 1 in 10 won’t sprout.
Does soaking seeds speed up germination? For thick-coated seeds (beans, peas, parsley), yes.
Should I use a heat mat? For peppers and tomatoes, yes.
Does light matter for germination? Most seeds don’t need light. But once sprouted, they need it immediately.