Louisiana Planting Guide By Month

Getting Your Garden Right in Louisiana

Understanding a Louisiana Planting Guide By Month

Most people think you just look at a calendar and start digging. That works for some places, but Louisiana is its own thing. You've got humid subtropical climate for most of the state, a narrow tropical zone down near the delta, and frost dates that shift depending on whether you're near the river or inland. I've been growing here for years, and the first time I tried to follow a generic Southern planting calendar, I lost three rows of tomatoes to late frost because I was in the 70205 zip and thought the guidelines applied equally. The Louisiana Planting Guide By Month breaks down what goes in the ground when, but the real trick is understanding that "when" has a window, not a single day. A few degrees matter. A dry spell matters more. The soil temperature matters more than the air temperature for things like okra and sweet potatoes.

What Actually Goes in the Ground and When

Here's how it shakes out if you're planting for the humid subtropical zone that covers most of the state. It's not glamorous, but January is when you start onions from sets. Early varieties work best. You can also start broccoli and cabbage indoors under lights if you have them. Soil temperature is too low for direct sowing anything tender. Don't bother with anything else outside except maybe garlic if you're in the northern parishes. I learned the hard way that planting garlic too early in the southern parishes leads to premature bolting because the winter is just warm enough to trick it. This is your last shot at cool-season crops. Peas, spinach, radishes, and carrots go in the ground by mid-February if the soil isn't waterlogged. You can start them indoors earlier and transplant, but I usually just direct-sow because it saves time and the seeds are cheap. The key is watching the five-day forecast. If a freeze is coming, row covers do more good than you'd expect. I use old bedsheets pinned to hoops. Not pretty, but effective.

March is when things pick up. Corn goes in when the soil hits around 60°F. You can check with a soil thermometer, but honestly, if you're pulling dandelions in the yard, the ground is probably warm enough. Tomatoes and peppers go in late March, but only after the last frost date for your area. Here's the thing most people miss: transplants shock differently than seeds. A seed starts slow and adjusts. A nursery transplant hits your garden and sits for two weeks doing nothing while it recalibrates. That's normal. Don't water it more. That won't help. April is peak planting for warm-season everything. Okra, beans, squash, cucumbers, sweet potatoes, melons. Soil temperature is the real gatekeeper here. Okra won't germinate well below 70°F at the surface. Sweet potatoes won't grow at all until the soil is above 65°F and staying there. I used to plant sweet potato slips in early April because the calendar said so, and they'd rot every time. Now I wait until May unless I'm using black plastic to warm the bed. That single change cut my slip loss rate from about 40% to under 10%. May is late for bush beans if you want a second crop, but first plantings are solid. Eggplant, more tomatoes if you missed the window, and definitely cucurbits. This is also when you plant the second succession of beans and corn for a fall harvest. The problem in Louisiana is that May gets hot fast. Shade cloth for seedlings isn't optional when you're looking at 90-degree days with humidity over 80%. I put up 30% shade cloth over my spring transplants and it made a noticeable difference in establishment speed.

June is maintenance and late plantings. Sweet corn pollination happens now, and if it's too dry, you need to water consistently or the ears fill poorly. This is also planting time for fall crops in the southern parishes. Collards, kale, and lettuce go in late June for a fall harvest. They'll bolt in July heat, which is why timing matters. I've had better luck with kale started in containers during July and moved into the ground in August than trying to direct-sow in June and hope for the best. July is hot and most things are either established or failing. This is when you deal with pests. Squash bugs, cucumber beetles, hornworms. Row covers saved my first summer squash crop before I learned to hand-pick the adults. You can still plant warm-season crops if you have irrigation, but the germination rates drop significantly when the soil is above 85°F. I stopped trying to direct-sow carrots in July and just buy transplants or start them in cells under a fan. It takes more work upfront but saves you from thinning failures. August is transition time. Cool-season crops start going in again. This is the most important window for a fall garden in Louisiana. Broccoli, cauliflower, cabbage, lettuce, spinach, peas, radishes. The heat is still brutal, so you need shade for the first week or two after planting. I use bamboo stakes and shade cloth, or just plant on the east side of taller structures and let the shadow do the work. Soil temperature matters again here because warm soil at night is what triggers bolting in lettuce. If it's over 75°F at night, your lettuce will go to seed whether you want it to or not.

September is prime fall planting. Most cool-season crops establish well now. This is also when you can plant cover crops if you're rotation-conscious. Winter rye, crimson clover, hairy vetch. I skip cover crops most years because my garden is small and I prefer to just mulch heavily instead. Yields are similar, and it saves me the work of managing a cover crop that I'd have to kill anyway. October is your last real planting window for cold-hardy crops. Garlic goes in mid-October for most of the state. Onions from sets can go in now too. Spinach and radishes will overwinter with protection. I've had radishes survive light frosts through December without any covers, but spinach needs something. The frost dates in Louisiana are unreliable. Some years you get hard freezes in November, some years you don't see one until January. Don't plan around average dates. Plan around what's actually happening. These are quiet months. You're mostly harvesting what you planted in the fall and planning next year. If you have a greenhouse or cold frame, you can grow lettuce and spinach through winter. I don't run one, so I just accept that my garden sleeps from December through February and use that time to order seeds and build beds. There's nothing wrong with that. A lot of gardeners stress themselves out trying to force productivity in months when the climate doesn't support it.

A Louisiana Planting Guide By Month gives you a framework, but the real variables are microclimate, soil type, and rainfall patterns. Two properties five miles apart can have different frost dates and soil drainage that changes your timeline by weeks. The Mississippi River floodplain stays warmer and wetter than the higher ground in the central parishes. If you're in an urban area, the heat island effect shifts things too. Soil texture is another factor that guides rarely address. Heavy clay holds water and stays cold longer in spring. Sandy soil warms faster but drains too quickly for crops like carrots that need consistent moisture. I had to amend my clay bed with compost and raised beds before anything grew reliably. It took two seasons of amendment before the soil structure improved enough to plant on schedule. The biggest mistake I see people make is treating a planting guide like a rigid schedule. It's a range, not a deadline. A few days early or late rarely ruins a crop. But plant tomatoes before the soil is warm and they stall. Plant sweet potatoes before the soil is warm and they rot. Those two mistakes are the most common failures I encounter, and they're entirely preventable if you check the soil temperature instead of trusting the calendar alone.

If you want a downloadable reference, most parishes have cooperative extension offices that publish monthly planting calendars specific to their area. The LSU AgCenter puts theirs online. Search for your parish plus LSU AgCenter planting guide. The local version is more useful than any generic template you'll find because it accounts for your specific frost dates and rainfall patterns.