How to Grow Tomatillo
Physalis philadelphica
Tomatillos are vibrant, green fruits encased in papery husks that grow on bushy plants related to tomatoes. Gardeners prize them for their unique tart flavor perfect for salsas and salads, offering a refreshing alternative to common summer vegetables.
📷 Wikipedia: TomatilloStarting Tomatillo: indoors or direct sow?
🌾 Sow directly in the garden — Tomatillo is not usually started indoors.
Tomatillos are strictly warm-season plants that require soil temperatures to be well above freezing before any seeds are sown or seedlings moved outdoors.
Soil, care & harvest
Prepare loose, fertile soil with a pH between 6.0 and 7.0 before planting. As a warm-season crop, you must wait until after the last spring frost when the ground is thoroughly warm; do not sow early. Start seeds indoors only if necessary, placing them about 1/4 inch deep. Expect germination to occur within five to ten days under consistent warmth.
Space plants 36 inches apart to ensure good air circulation and fruit development. Provide sturdy support or a trellis since the vines can grow up to four feet tall. Water moderately but regularly, keeping soil consistently moist without waterlogging. Apply mulch around the base to retain moisture and suppress weeds, feeding lightly if growth seems slow.
Watch for aphids and fungal issues like blight; prevent these by ensuring good airflow and avoiding overhead watering. Harvest begins roughly seventy-five to one hundred days after sowing when husks turn brown and dry. Squeeze the fruit gently; it is ready when it feels soft inside its papery casing.
When to Plant Tomatillo
Planting windows vary by USDA hardiness zone. Look up yours by ZIP code.
| Zone | Start Indoors | Direct Sow | Harvest |
|---|---|---|---|
| Zone 1 | May | — | September – August |
| Zone 2 | April – May | — | September |
| Zone 3 | April | — | August – October |
| Zone 4 | March – April | — | August – October |
| Zone 5 | March | — | July – September |
| Zone 6 | March | — | July – September |
| Zone 7 | February – March | — | July – September |
| Zone 8 | February | — | June – August |
| Zone 9 | January | — | May – July |
| Zone 10 | January | — | May – July |
| Zone 11 | January | — | April – June |
| Zone 12 | January | — | April – June |
| Zone 13 | January | — | April – June |
