Tomatillos need about seventy-five warm days to go from seed to fruit ready for salsa verde. If you are wondering exactly how long do tomatillos take to grow, the answer depends on your climate, the variety you choose, and whether you start seeds indoors or direct sow. This guide will walk you through the entire timeline, from planting to harvest, with practical tips to speed things up.
These tangy green fruits are a staple in Mexican cooking. They are easy to grow, but they do have a specific growing window. Understanding the full cycle helps you plan your garden and avoid disappointment.
How Long Do Tomatillos Take To Grow
From seed to harvest, tomatillos typically take 75 to 100 days. The exact number depends on the variety and growing conditions. Most common varieties, like Toma Verde, are ready in about 75 to 85 days. Some heirloom types may need up to 100 days.
If you start seeds indoors, you add about 6 to 8 weeks before transplanting. That means the total time from starting seeds to picking fruit can be 120 to 150 days. But the “days to maturity” listed on seed packets usually counts from transplanting, not from seeding.
Key Factors That Affect Growth Time
- Temperature: Tomatillos love warmth. They grow best when daytime temps are between 70°F and 85°F. Cool weather slows them down.
- Sunlight: Full sun (at least 6 to 8 hours daily) is essential. Less sun means slower growth and fewer fruits.
- Soil quality: Rich, well-draining soil with plenty of organic matter helps plants grow faster.
- Watering: Consistent moisture is key. Drought stress can delay flowering and fruit set.
- Pollination: Tomatillos are self-incompatible. You need at least two plants for good pollination. Without a partner, fruit set is poor or nonexistent.
Starting Tomatillos From Seed Indoors
Starting seeds indoors gives you a head start. This is especially useful in cooler climates with short summers. Here is the typical timeline:
- Sow seeds indoors 6 to 8 weeks before your last expected frost date.
- Seeds germinate in 5 to 10 days at soil temperatures around 70°F to 80°F.
- Seedlings grow slowly at first. They need bright light and warm conditions.
- Hardening off takes about 7 to 10 days. Gradually expose plants to outdoor conditions.
- Transplant outdoors after all danger of frost has passed and soil is warm (at least 60°F).
Total indoor time: 6 to 8 weeks. After transplanting, expect fruit in 75 to 85 days for most varieties.
Direct Sowing Tomatillo Seeds
If you live in a warm climate with a long growing season, you can direct sow seeds outdoors. This skips the indoor step but extends the overall time to harvest.
- Sow seeds directly in the garden after soil warms to 65°F or higher.
- Seeds germinate in 7 to 14 days outdoors, depending on temperature.
- Plants grow more slowly than transplants. Expect fruit 90 to 110 days after sowing.
Direct sowing works best in USDA zones 7 and warmer. In cooler zones, you may not get fruit before frost.
Transplanting And Early Growth Stage
Once your seedlings are in the ground, the real growth begins. Tomatillos are vigorous plants. They can grow 3 to 4 feet tall and spread even wider. Support them with cages or stakes to keep fruit off the ground.
After transplanting, plants focus on root and leaf growth for the first 3 to 4 weeks. You will see rapid foliage expansion. During this time, water deeply once or twice a week, depending on rainfall.
Flowers appear about 4 to 6 weeks after transplanting. The yellow, five-petaled blooms are small but plentiful. Each flower has the potential to become a fruit, but only if pollination occurs.
Pollination And Fruit Set
Tomatillos require cross-pollination. A single plant will produce few, if any, fruits. Plant at least two tomatillo plants, spaced 2 to 3 feet apart. Bees and other insects do the work, but wind can help too.
Once pollinated, the flower drops and the fruit begins to swell. The fruit grows inside a papery husk called a calyx. This husk starts green and becomes papery and brown as the fruit matures.
Fruit development takes about 3 to 4 weeks from pollination to full size. The fruit will fill the husk and may even split it open when ready.
Harvesting Tomatillos
You can start harvesting tomatillos when the fruit fills the husk and the husk turns from green to brown or papery. The fruit itself should be firm and green or purple, depending on the variety.
Do not wait for the fruit to turn yellow or soft. That means it is overripe and less flavorful. Pick them when the husk is still slightly green but the fruit is firm inside.
Harvest every few days once they start ripening. Plants produce continuously until frost. A single plant can yield 1 to 2 pounds of fruit per week during peak season.
Common Mistakes That Delay Harvest
- Planting too early: Cold soil and air slow growth. Wait until nights are consistently above 50°F.
- Underwatering: Tomatillos need consistent moisture. Dry spells cause flowers to drop and fruit to crack.
- Overcrowding: Too many plants in a small space reduces air flow and slows growth. Space them 2 to 3 feet apart.
- Poor pollination: Without a second plant, fruit set is poor. Always plant at least two.
- Ignoring pests: Aphids, flea beetles, and tomato hornworms can stress plants and delay maturity. Check weekly.
Variety Differences In Growth Time
Not all tomatillos are the same. Some varieties mature faster than others. Here are common types and their typical days to maturity from transplant:
- Toma Verde: 60 to 70 days. This is the most common green variety. It is reliable and productive.
- Purple de Milpa: 75 to 85 days. Produces purple fruits with a slightly sweeter flavor.
- Pineapple tomatillo: 80 to 90 days. A small, sweet variety with a hint of pineapple taste.
- Grande Rio Verde: 70 to 80 days. Large fruits, good for salsa.
- Mexican Strain: 65 to 75 days. A classic heirloom with consistent results.
Check the seed packet for the exact days to maturity. Remember, this number is usually from transplanting, not from seeding.
How Climate Affects Growth Time
Your local climate plays a big role in how long tomatillos take to grow. In warm regions like the Southwest, you can direct sow and still get a harvest in 90 days. In cooler northern areas, you almost always need to start seeds indoors.
If you have a short growing season (less than 100 frost-free days), choose early-maturing varieties like Toma Verde. Use black plastic mulch to warm the soil and row covers to protect plants from cool nights.
In hot climates, tomatillos may slow down during extreme heat (above 95°F). Provide afternoon shade and consistent water to keep them going.
Extending The Growing Season
You can push the limits of your growing season with a few tricks:
- Use cloches or cold frames to protect young plants in spring.
- Grow in containers that can be moved indoors if frost threatens.
- Choose a south-facing spot with maximum sun exposure.
- Apply a thick layer of mulch to keep soil warm and moist.
These methods can add 2 to 4 weeks to your growing window, which is often enough to get a full harvest.
Frequently Asked Questions
How long do tomatillos take to grow from seed?
From seed to harvest, it takes about 120 to 150 days total. This includes 6 to 8 weeks indoors and 75 to 85 days outdoors after transplanting.
Can tomatillos grow in pots?
Yes, they grow well in large containers (at least 5 gallons). Use a cage or stake for support. Remember to plant at least two pots for pollination.
Do tomatillos need full sun?
Yes, they need at least 6 to 8 hours of direct sunlight daily. Less sun results in slower growth and fewer fruits.
Why are my tomatillos not fruiting?
Most likely, you have only one plant. Tomatillos need cross-pollination from another plant. Also check for poor soil, insufficient water, or extreme temperatures.
How long do tomatillos last after harvest?
Fresh tomatillos keep in the refrigerator for 2 to 3 weeks if left in their husks. You can also freeze them whole or roasted for up to 6 months.
Final Tips For A Successful Tomatillo Harvest
Plan your planting date backward from your first fall frost. If your first frost is in mid-October, you need to have transplants in the ground by early July at the latest. This gives them 75 to 85 days to mature.
Water deeply and consistently. Tomatillos are not drought-tolerant. Mulch around the base to retain moisture and suppress weeds.
Harvest regularly to encourage more fruit production. If you leave ripe fruit on the plant, it signals the plant to slow down. Pick every 3 to 4 days during peak season.
Store tomatillos in a cool, dry place. Do not wash them until you are ready to use them. The husks help protect the fruit and extend shelf life.
With the right care, you can enjoy fresh tomatillos from your garden for weeks. The key is understanding the timeline and giving your plants what they need at each stage. Now you know exactly how long do tomatillos take to grow, so you can plan your garden with confidence.