Why do my transplants look stunted and aren't growing?
Cold soil, root-bound roots, or fertilizer burn can all stall a transplant — check soil temperature first before diagnosing anything else.
Soil temperature is the most common cause of transplant stall that gardeners overlook. A tomato transplanted into 55°F soil may sit completely motionless for 2–3 weeks while looking otherwise healthy. The plant is not dying — it's simply waiting. Root metabolism slows dramatically below 60°F, and warm-season crops don't begin active growth until soil approaches 65–70°F. A soil thermometer is the fastest diagnostic tool you can own.
Root-bound transplants are the second common cause. A plant that has been in a small cell or pot too long has roots that have circled the container and formed a dense mat. When you plant it out, those circled roots continue to grow in the same circular pattern rather than spreading out, limiting the plant's access to water and nutrients. Before transplanting, gently loosen the bottom of the root ball with your fingers — or make two or three vertical cuts with a knife on the sides of particularly dense root masses.
Fertilizer burn is less common but worth considering if you amended your bed heavily with synthetic fertilizer close to planting time. High salt concentrations in the soil draw water out of roots rather than into them, leaving a transplant that wilts even in moist soil. A flush of water through the bed can help; next time, wait at least two weeks after applying dry synthetic fertilizer before planting into that soil.
If soil temperature is fine and roots aren't bound, give the plant 10–14 days before worrying further. Some transplants — especially peppers — take time to establish underground before they show much above-ground growth.
- TomatoThe warm-season anchor of the summer garden.
- PepperA tropical perennial grown as an annual — patient, slow, and particular about warmth.
- CucumberA thirsty vine that wants warm soil, steady water, and something to climb.
- ZucchiniThe summer squash that turns a garden into a produce stand — if you can keep the vine borers away.
- BasilThe summer companion — to tomatoes, to pasta, and to the gardener with a south-facing window.
- Bird DamageBerries pecked or missing, seeds scratched from beds, and seedlings dislodged — birds feeding on ripe fruit, seeds, or soil grubs.
- Blossom DropFlowers fall before setting fruit, often during temperature extremes or after weather stress.
- Cabbage MaggotBrassica transplants wilting and dying as white maggots tunnel through roots at or below the soil line.
- Carrot Rust FlyRusty tunnels through carrot and parsnip roots made by small white maggots feeding inside the root.
- ClubrootBrassica plants wilt and yellow despite watering; roots show club-shaped swellings when dug.
- My transplants look wilted and sad after planting — is this normal?Some wilting and leaf drop in the first few days after transplanting is normal; if a plant is still wilting after a week and well-watered, the roots may have been damaged.
- How do I harden off seedlings before transplanting?Gradually expose indoor seedlings to outdoor conditions over 7–10 days, starting with an hour of shade and building up to full sun and overnight temperatures before planting.
- Can you give a plant too much nitrogen, and what does it look like?Yes — excess nitrogen produces very dark green, lush leafy growth at the expense of flowers and fruit, and in high concentrations can burn roots and cause wilting.