What the LSU Planting Guide 2023 Actually Covers

The LSU AgCenter put out their 2023 planting guide and it's still one of the most practical resources for gardeners in the southern United States, especially if you're dealing with the humidity and heat cycles that define this region. The guide breaks down planting windows by crop, soil type, and region within the state, which matters more than people realize because southeastern Louisiana has different frost dates than the north near Shreveport. I've been using it for about six years now. The first time I tried to plant sweet potatoes based on a general southern guide, I missed the window and got a slimy rot situation I still think about. The LSU version gives you actual dates tied to your parish, which saves you from guessing when the soil has actually warmed up past 65 degrees Fahrenheit.

Where to Find the Lsu Planting Guide 2023

You can download the full PDF directly from the LSU AgCenter website at agcenter.lsu.edu. Search for "2023 Vegetable Gardening Guide" and it comes up as the primary result. There's also a mobile-friendly version on their site if you don't want to print it out. The PDF runs about 40 pages and includes a calendar chart, spacing charts, and a pest management section that most people skip but shouldn't. Most people open the guide, look at the calendar chart, and plant according to the dates. That alone will get you decent results, but you'll miss the parts that actually prevent failure. The guide includes soil temperature thresholds for each crop, and those are the real key. For example, collard greens and mustard greens can handle a soil temp of around 40°F, but if you plant them before the soil reaches that threshold, they just sit there and rot. The calendar says "early spring," which sounds vague until you're standing in a cold wet row watching nothing happen. I used a cheap soil thermometer — the kind you push into the ground — and checked readings at the 4-inch depth where most seed roots develop. When I started doing that, my germination rates jumped from roughly 50% to about 80% for cool-season crops. That's not a small difference. It's the difference between thinning seedlings and buying more seeds two weeks later.

Spacing and Depth — What the Charts Don't Tell You

The spacing charts in the guide are accurate on paper, but field conditions change things. If you're planting in raised beds with amended soil, you can go slightly closer than the chart recommends because the soil drains better and roots spread differently. In flat ground garden beds with heavy clay, you need to give crops more room because the soil compacts around the roots and limits lateral growth. I learned this the hard way with bush beans. I followed the chart exactly, got a crowded row, and ended up with smaller pods because the plants were competing for nutrients in compacted soil. Planting depth is another area where the guide is right but people ignore it. The standard rule is to plant seeds at a depth of about two to three times their width. A pea seed goes in about an inch. A carrot seed, which is tiny, goes in about a quarter inch and gets covered with fine soil or vermiculite. If you bury carrot seeds too deep, they won't emerge. I wasted an entire row one spring doing this before I actually measured the depth instead of just guessing.

Common Mistakes People Make With This Guide

The biggest mistake is treating the dates as absolute rather than conditional. The planting calendar assumes normal weather patterns, which doesn't happen every year. In 2023, Louisiana had an unusually late spring freeze that pushed actual safe planting dates back by about two weeks in many parishes. If you follow the guide blindly without checking the current season's weather pattern, you'll lose crops to frost or cold soil. Another mistake is ignoring the crop rotation notes. The guide includes rotation recommendations to prevent soil-borne diseases, and skipping them is why so many home gardeners deal with Fusarium wilt in tomatoes year after year. Rotate your nightshades — tomatoes, peppers, eggplants — to a different bed each season. It's not optional if you want consistent yields.

A Real Problem I Hit and How I Worked Around It

Last year I planted corn according to the guide's timeline, but the soil was still too wet from early spring rains. The corn sat in saturated ground for four days before I noticed the seeds were starting to show signs of fungal infection. I dug them up, let them dry on a paper towel for a day, then replanted them in raised beds with added sand for drainage. Half of them came up. It wasn't ideal, but it was better than letting them rot in place. The guide mentions well-drained soil as a requirement but doesn't spell out what to do when your soil isn't well-drained at planting time. The 2023 edition is solid for traditional in-ground gardening. It's less helpful if you're growing in containers, hydroponics, or vertical systems. The spacing and watering recommendations assume ground contact and natural rainfall patterns. If you're doing container gardening, you'll need to adjust watering frequency significantly because pots dry out much faster, especially in Louisiana's summer heat. I use the guide for timing and variety selection but adjust watering and fertilizing on my own based on what the containers actually need. There's also limited coverage of urban or small-space gardening. If you're working with a backyard that's less than a quarter acre, the guide's recommendations for row spacing and plot layout don't translate directly. You'll need to adapt the crop choices and condense the spacing, but the variety recommendations and pest management tips still apply.

Bottom Line

The LSU Planting Guide 2023 is a reliable reference if you treat it as a starting point rather than a set of rigid rules. Check soil temperatures before planting. Adjust spacing for your actual soil conditions. Rotate crops. And don't ignore the dates if the weather has been off — your local conditions matter more than the calendar.