Asian greens work best in Virginia as a fall crop sown in late summer, with a shorter window in spring. On the coastal plain, the mean last spring freeze falls between March 20 and April 3, and the first fall freeze between November 10 and November 24. Mountain and southwest gardens run weeks later in spring and earlier in fall, so those dates shift with your elevation.
When the soil is warm enough in Virginia
The last spring freeze at NAS Oceana in Virginia Beach falls between March 20 and April 3, according to NOAA’s 1991-2020 Climate Normals. That range is the 30 to 70 percent probability band for a 32°F freeze. Some years the last freeze lands earlier, and some years a cold night still arrives after April 3. Treat the range as odds.
The date matters less than what it stands in for. Seeds respond to soil, and soil trails the air. It warms after the freeze risk ends, not at the same moment. A bed that was frozen in February can still be cold and waterlogged in mid-March, and seed sown into it sits and sulks or rots. A spring sowing goes best into soil that has begun to warm and drain.
The coast is the mild end of the state. Gardeners in the Blue Ridge and southwest Virginia should expect spring to arrive weeks after these dates and fall to arrive weeks before them. A neighbor’s garden fifty miles inland can be a different calendar altogether.
How can you tell the soil is ready for spring sowing?
Two quick checks do the job. First, squeeze a handful from the top few inches. If it holds as a wet ball, wait. If it crumbles when you poke it, the bed is workable. Second, push a soil thermometer about two inches down in the morning, when the reading is at its lowest, and watch whether it keeps climbing over several days. Asian greens are cool-season plants and do not need hot soil, but they sprout evenly once the ground stops being cold and soggy.
Light frost on young seedlings is usually survivable for the hardier types. The real limit on a spring crop is the other end: as days lengthen and warm up, plants bolt, so spring sowings should go in as early as the soil allows.
When should you sow for fall?
Count backward from the first freeze, November 10 to November 24 at the reference station. Read the days-to-maturity on the seed packet. For direct-sown greens that count starts at sowing, and only transplants count from the day they go in the ground. Then leave a few extra weeks, because growth slows as days shorten and nights cool.
Late-summer soil is warm, so seed comes up fast. The trouble is keeping the seedlings moist and shaded through the first week or two, which a light mulch and a strip of shade cloth handle well.
How long the season lasts here
The reference station has about 221 to 249 frost-free days between the mean last spring frost and the mean first fall frost. That is a long window by national standards, and it changes how you plan.
A long window allows a second sowing, and a third. You can sow a spring crop, let it finish before the heat arrives, and sow again as summer cools. Fall can hold several small sowings a couple of weeks apart instead of one big planting that all matures in the same week. Small repeat sowings suit these greens, which go from tender to tough or bolted quickly once they reach size. For the rhythm and spacing of repeat plantings, see Growing Asian Greens: Fast, Cold-Hardy, and Prone to Bolting.
Length also settles the transplant question. Where the season is short, such as the upper Midwest (see Growing Asian Greens in Minnesota), the first sowing is often the only one, and starting indoors can buy needed time. On the Virginia coast the calendar is generous enough that direct sowing wins most of the time. Seedlings started in cells need a root check before they go out: roots circling the cell or pushing hard out the bottom mean the plant is stressed, and a stressed seedling is more likely to bolt. Taproot types such as daikon resent any root disturbance and should be sown where they will grow.
In the Blue Ridge and southwest, the window is shorter at both ends. The spring crop starts later and the fall crop has to finish sooner, so there is less margin for a second sowing and more reason to count backward from fall frost carefully. A gardener there is closer to the middle of the country than to Virginia Beach, and the calendar should reflect that.
Between the spring crop and the fall crop sits the midsummer gap. Many gardeners use it to clear the bed, add compost, and set up the shade and irrigation they will need in late summer.
Heat and water in Virginia
Asian greens belong to the second half of the year, and heat is the reason. Where summers are hot and humid, as they are across the Virginia lowlands, midsummer is the wrong time for this crop. Plants bolt, leaves turn bitter or tough, and flea beetles pit the foliage. Mountain gardens run cooler and get a longer stretch of good growing weather, but they pay for it at the other end with an earlier fall freeze.
How does summer heat and rain affect Asian greens?
Humidity matters as much as temperature. Warm, wet weather favors fungal and bacterial disease on brassicas, including downy mildew and black rot, and leaves that stay wet overnight invite both. Summer storms in the region can be heavy and uneven, with a soaking followed by a dry week. That swing is hard on shallow-rooted greens, which want steady moisture.
Several practices help late-summer sowings through it:
- Space plants so air moves between them, and thin early.
- Water the soil at the base in the morning, so foliage dries by evening.
- Mulch lightly to keep the root zone cool and the moisture even.
- Use shade cloth on the hottest afternoons for the first weeks.
- Grow in raised beds or well-drained soil where heavy rain tends to pool.
Will Asian greens survive a Virginia winter?
The first fall freeze, November 10 to November 24 at the reference station, sets how late a sowing can still finish. The winter low decides what happens after that. At the Virginia Beach reference station, the mean daily minimum of the coldest month is 31.6°F, so the average coldest night sits just under freezing. Individual cold snaps go lower than that average.
The hardiest types, such as tatsoi, mizuna and many mustards, can stand through a mild coastal winter under a row cover or low tunnel. Tender types, including most pak choi, end with the first hard freeze unless you cover them or harvest first. Inland and in the mountains, winters are colder. The USDA Plant Hardiness Zone Map (2023) spans zones 5a to 8b across the state, so a single zone number would mislead. Gardeners at higher elevation should plan on harvesting before deep cold arrives and treat winter survival as a bonus.
Which Asian greens suit Virginia
Choose by type, then by local performance. A long season with hot, humid summers favors types that grow fast and finish before heat or cold arrives, plus anything that holds up in a cool fall. Humidity makes disease resistance the first thing to look for in a seed description. A comparison by type:
| Type | Where it fits | Watch for |
|---|---|---|
| Mizuna and tatsoi | Spring and fall; among the hardier types for cover through winter on the coast | Flea beetles in warm weather |
| Pak choi | Fall sowings, and early spring | Bolting in heat and lengthening days |
| Komatsuna | Late-summer sowings, since it handles heat better than most | Moisture swings |
| Mustard greens | Spring and fall; quick and cold-tolerant | Strong flavor in hot weather |
| Napa cabbage | Fall only, timed back from the first freeze | Needs the longest run of cool weather to form a head |
Variety names are left off deliberately. The same type behaves differently on the coast, in the Piedmont and in the mountains, and a variety that sails through a Tidewater fall can bolt or rot elsewhere in the state. The varieties worth planting are the ones that have been trialed in your area, and Virginia Cooperative Extension and your county office can point you to them. Seed catalogs describe disease resistance and bolt tolerance in general terms, which helps you narrow a list but cannot replace local trial results.
Every Asian green in this list is a brassica, and so are turnips and rutabagas. They share pests and diseases with cabbage, kale and mustard, including clubroot, black rot and flea beetles. A gardener who follows a turnip crop with Asian greens, or moves them into a cabbage bed, has not rotated anything. Give them a bed where no brassica has grown for a few years, and follow a proper crop rotation plan. Neighbors in the Upper South face much the same mix of long seasons and humid summers, as Growing Asian Greens in Tennessee explains.
Common questions
Can you grow Asian greens through winter in Virginia?
On the coast, the hardiest types can stand through a mild winter under a row cover or low tunnel, given an average coldest-month minimum of 31.6°F at Virginia Beach. In the Blue Ridge and southwest, colder winters make it a harvest-before-the-deep-freeze crop. Check the spot where you garden, because the state spans USDA zones 5a to 8b.
Should you start Asian greens from seed or transplants?
Direct sowing is simpler across most of the state, since the season is long enough to skip the head start. Transplants make sense for the earliest spring crop or where the window is short. Check the roots before planting out, and give taproot types like daikon their own spot from the start.
Why do Asian greens bolt in spring?
Lengthening days and rising temperatures push the plant to flower, and cool-season greens respond quickly. Sow as early as the soil allows, harvest young, and shift the main planting to fall, when shortening days work for the crop.
Can you plant Asian greens where cabbage grew last year?
Avoid it. Asian greens are brassicas, and they share diseases and pests with cabbage, kale, mustard, turnips and rutabagas. Soil-borne trouble such as clubroot carries over, so rotate to a bed free of brassicas for several years.