When To Plant Green Onions In Texas

When to plant green onions in Texas depends entirely on your region and the season, but the short answer is that you can plant them in both early spring and early fall.

Texas is massive, spanning multiple USDA hardiness zones from the humid Gulf Coast to the arid west, so timing shifts by a few weeks depending on where you call home.

The good news is that green onions, also called scallions, are one of the easiest crops you can grow, and they’ll reward you with a continuous harvest if you get the timing right.

In this post, we’ll break down the best months for planting in North, Central, and South Texas, plus tips for extending your green onion season.

Let’s dig in.

When to Plant Green Onions in Texas: The Best Seasons

The best time to plant green onions in Texas is when the soil temperature stays between 50°F and 75°F, which naturally happens in two windows each year.

Spring planting works for the entire state, and fall planting is a lifesaver for South Texas gardeners who want to avoid the brutal summer heat.

Here’s how the seasons break down for when to plant green onions in Texas:

1. Spring Planting (February to April)

For most of Texas, you’ll want to get your green onion seeds or sets in the ground from mid-February through early April.

North Texas gardeners should lean toward the later end, waiting until late March or early April to avoid a late frost.

Central Texas can start as early as mid-February because the soil warms up faster.

South Texas, including Houston and San Antonio, can actually plant green onions in January and February, and then again in the fall.

The key is to plant green onions in Texas before the heat spikes in May, because scallions will bolt and turn bitter when the thermometer climbs above 85°F.

2. Fall Planting (September to November)

Fall is arguably the best time to plant green onions in Texas, especially in the southern half of the state.

Start your fall crop from September through November, once the intense summer heat begins to break.

South Texas gardeners can plant as late as November and grow green onions all winter long.

Central Texas should aim for September and October, while North Texas needs to get them in by early September so they establish before the first frost.

Fall-planted green onions are sweeter and more tender because the cooler weather slows down their growth, concentrating flavor.

3. Winter Planting (South Texas Only)

If you live in the Rio Grande Valley or along the coast, you can actually plant green onions in Texas during the winter months.

December and January are perfectly fine for planting in these warm zones, as long as you don’t get a hard freeze.

These green onions will grow slowly through the winter and explode with growth in early spring.

For everyone else, winter is a time to plan your spring patch, not plant it.

How to Plant Green Onions in Texas Successfully

Now that you know when to plant green onions in Texas, let’s talk about how to set them up for success.

Green onions are shallow-rooted, so they need loose, well-draining soil with plenty of organic matter.

Here are the step-by-step methods for planting green onions in Texas:

1. Planting Green Onion Seeds

If you’re starting from seed, sow them about 1/4 inch deep and 1 inch apart.

Keep the soil consistently moist, and you’ll see sprouts in 10 to 14 days.

Once the seedlings are 2 inches tall, thin them to 3 inches apart so they have room to bulb up.

Seeds are the most cost-effective way to plant green onions in Texas, but they take 60 to 90 days to mature.

2. Planting Green Onion Sets (Bulbs)

Sets are small, immature onion bulbs that are much faster than seeds.

Plant each set about 1 inch deep and 3 inches apart, with the papery tip pointing up.

Sets will give you harvestable green onions in as little as 30 to 45 days.

This is the easiest route if you’re a beginner or want a quicker reward.

3. Regrowing Green Onions from Kitchen Scraps

You can even plant green onions in Texas from the leftover root ends of store-bought scallions.

Just place the root ends in a glass of water for a week until new roots sprout.

Then transplant them into your garden bed, and they’ll regrow in about two weeks.

This is a fun, zero-waste way to keep a constant supply of green onions throughout the season.

Texas-Specific Growing Tips for Green Onions

Texas weather can be extreme, so a few local tricks will help you get the most from your green onions.

Mulching is essential here, as it keeps the soil cool and retains moisture during dry spells.

Water deeply but infrequently, and avoid getting water on the leaves to prevent fungal diseases.

Green onions love nitrogen, so feed them with a balanced fertilizer every three weeks.

And if you live in a hot area, plant green onions in a spot that gets morning sun and afternoon shade.

 

When to Plant Green Onions in Texas by Region

Let’s simplify things with a quick regional breakdown so you know exactly what to do.

Different parts of Texas have very different plant hardiness zones, so your timing is based on your geography.

Here’s the cheat sheet for when to plant green onions in Texas:

North Texas (Dallas, Fort Worth)

Spring: plant seeds in late March or early April, or sets in early April.

Fall: plant sets in early September for a fall crop.

This region gets frost, so avoid planting in late fall.

Central Texas (Austin, San Antonio)

Spring: plant seeds in mid-February to early March.

Fall: plant in September or October for the best yields.

The mild winters mean you can sometimes get away with a winter harvest too.

South Texas (Houston, Corpus Christi, Rio Grande Valley)

Spring: plant green onions in Texas as early as January or February.

Fall: plant in September through November for an abundant winter crop.

This region can basically grow green onions year-round, with a break only in the extreme summer months.

So, When to Plant Green Onions in Texas?

The best time to plant green onions in Texas is in early spring (February to April) and early fall (September to November).

You can successfully plant green onions in Texas in both seasons, so you’ve got two chances to get it right.

Just remember to adjust your exact timing based on your region, and you’ll be snipping fresh green onions in no time.

Start your spring patch as soon as the soil warms up, and come fall, plant another round for a steady supply through winter.

Happy planting, Texas, and enjoy those crisp, homegrown green onions!