Should I bury my tomato plants deep when transplanting?
Yes — tomatoes grow roots along any buried stem, so planting deep creates a larger root system and a more resilient plant.
Tomatoes are unusual among common garden vegetables in that stem tissue will form roots wherever it's underground. This is called adventitious rooting, and it's why the standard advice is to plant tomato transplants so that two-thirds of the stem is buried — or to dig a trench and lay a leggy transplant on its side, with only the top few inches of growth above the soil. The buried stem develops roots along its entire length within a week or two.
The practical benefit is a root system that can draw water from a larger volume of soil, which matters most during dry spells and hot weeks. A deeply planted tomato also tends to anchor better — the plant is less likely to blow over in a summer storm or lean so far that it breaks at the main stem.
Before burying, remove all leaves from the portion of stem that will be underground. Leaves left on will rot, which can invite disease into the soil around the stem. Pinch them off cleanly. The small stubs left behind will be where the new roots emerge.
This technique works at transplant time only. Trying to add soil around an already-established tomato stem later in the season offers diminishing returns — the stem has already developed a bark-like coating that doesn't root easily. Do it at planting, not after.
- Bacterial WiltCucurbit vines wilt rapidly despite moisture; cut stem shows sticky ooze that threads when pulled apart.
- 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.
- Corn Earworm / Tomato FruitwormCaterpillars eating corn kernels from the tip; same species bores into tomato and pepper fruit. Often called 'tomato fruitworm' when found on tomato.
- 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.
- Why are my seedlings tall, pale, and floppy?Seedlings stretch toward inadequate light — the fix is moving them closer to the light source, not giving them more hours of light.
- 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.