How to Grow Tomatillos: You Need At Least Two Plants
A single tomatillo cannot pollinate itself and produces empty husks. Two or more plants, full sun, and support for a sprawling 1.5 m shrub.
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One fact decides whether you get any fruit at all: a single tomatillo plant cannot pollinate itself. Everything else about growing them is straightforward.
The pollination problem
Tomatillos are largely self-incompatible. A flower needs pollen from a genetically different plant to set fruit.
With one plant, the sequence is: abundant flowering, husks inflating, husks staying empty, and a gardener concluding they did something wrong. They did one thing wrong, at planting.
Two is the minimum, three or four is better
Plant them within a couple of metres of each other so bees and other insects move between them readily. Two plants at opposite ends of a garden is barely better than one.
This also applies in containers — two large pots, not one.
If plants are correctly paired and husks are still empty, the usual causes are cold wet weather during flowering keeping pollinators grounded, or extreme heat causing flower drop. A gentle shake of the plants during flowering helps marginally; flowers planted nearby to draw bees help more.
Tomatillo against tomato
| Tomatillo | Tomato | |
|---|---|---|
| Pollination | Needs a second plant | Self-fertile |
| Size | 1.2–1.5 m, sprawling wide | Varies; more upright |
| Disease | Markedly more resistant | Blight, wilts, numerous |
| Heat tolerance | Good | Moderate |
| Drought tolerance | Good | Poor |
| Soil demands | Lower | Higher |
| Support | Essential | Essential |
The practical summary: if tomatoes struggle in your garden, tomatillos may well not.
Growing them
- Start indoors six to eight weeks before the last frost, or buy plants
- Plant out after frost, into warm soil, deeper than they were in the pot — like tomatoes, they root from buried stem
- Full sun
- 90 cm apart, minimum
- Stake or cage at planting, not when the plant is already falling over
- Mulch and water consistently while fruiting
- Feed moderately. Too much nitrogen gives an enormous plant and less fruit
- No pruning needed — unlike tomatoes, they are not usually trained
Expect more fruit than you planned for
Two healthy plants produce a great deal — commonly far more salsa verde than a household gets through fresh.
Worth knowing in advance:
- Fruit drops when ripe, which is normal, so check the ground as well as the plant
- They freeze well husked and whole
- They store husk-on, cool and dry, for two to three weeks
- They self-seed enthusiastically — expect volunteers next year wherever fruit was dropped and missed
Harvest timing is its own question, since the husk rather than the colour tells you when — covered in when to pick tomatillos.
Step by step
- Time
- P90D
- Cost
- 10
- You need
- Tomatillo seed or plants — at least two, Compost, Mulch
- Tools
- Stakes or a cage per plant, A trowel
Plan for at least two plants
Tomatillos are largely self-incompatible, so one plant produces inflated empty husks. Two is the minimum and three or four is better, planted within a couple of metres of each other.
Start indoors six to eight weeks before last frost
Or buy plants. They germinate and grow much like tomatoes and resent being planted out into cold soil.
Plant deep, after the frost has passed
Set plants deeper than they sat in the pot. Like tomatoes they root along the buried stem, which produces a sturdier plant.
Space 90 cm apart in full sun
The sprawl is considerably wider than a tomato. Spacing that feels generous in May is about right by August.
Stake or cage at planting time
A fruiting plant is heavy and collapses outward without support, putting the fruit on the soil where it rots or gets eaten.
Mulch and water consistently
Steady moisture while fruit is setting and sizing. They tolerate drought better than tomatoes but crop far better without it.
Feed moderately
Too much nitrogen produces an enormous plant and less fruit. A balanced feed at planting and once during fruiting is enough.
Check the ground as well as the plant
Ripe tomatillos drop, which is normal rather than a problem. Collect fallen fruit while it is still firm and use it first.
Common questions
Do you need two tomatillo plants?
How big do tomatillo plants get?
How are tomatillos different from tomatoes to grow?
Why are my tomatillo husks empty?
Can you grow tomatillos in containers?
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