Grow with confidence
Slidell Vegetable Planting Calendar
Use Slidell climate patterns to see this month’s garden tasks and crop-by-crop planting windows for the humid north shore of Lake Pontchartrain in southeast Louisiana.
Plant through winter
Broccoli, lettuce, peas, carrots, radishes and leafy greens perform best from fall through early spring.
Use spring warmth
Use LSU AgCenter’s South Louisiana dates. The lake-moderated season allows early warm crops and a long autumn garden, while raised beds and careful irrigation help during wet, humid periods.
Restart the cool garden
Begin fall brassicas indoors and prepare beds for direct-sown roots and greens as temperatures moderate.
Local dates, crop by crop
Slidell Planting Dates
Choose a season and search for a crop to see when to start seeds indoors, move plants outside, direct sow and finish planting in the Slidell area.
What to plant this month
September in Slidell
These crops overlap the current month. Use the detailed date table and current weather before planting.
Fall 2026 planting
Planting Dates for the Fall Garden
| Crop | Start seeds indoors | Transplant or plant outdoors | Direct sow outdoors | Last recommended planting | Shop |
|---|---|---|---|---|---|
| BeansGood for direct sowing | Not recommended | Not recommended | Jul 1–1 | Jul 1–1 | Shop Beans → |
| BeetsGood for direct sowing | Not recommended | Not recommended | Aug 1–Sep 1 | Aug 1–Sep 1 | Shop Beets → |
| BroccoliUsually transplanted or planted | May 28–Jul 9 | Jul 17–Aug 17 | Not recommended | Jul 17–Aug 17 | Shop Broccoli → |
| Brussels SproutsUsually transplanted or planted | Apr 21–Jun 9 | Jun 16–Jul 17 | Not recommended | Jun 16–Jul 17 | Shop Brussels Sprouts → |
| CabbageUsually transplanted or planted | Jun 4–Jul 9 | Jul 17–Aug 17 | Not recommended | Jul 17–Aug 17 | Shop Cabbage → |
| CarrotsGood for direct sowing | Not recommended | Not recommended | Aug 1–Sep 1 | Aug 1–Sep 1 | Shop Carrots → |
| CauliflowerUsually transplanted or planted | May 28–Jul 9 | Jul 17–Aug 17 | Not recommended | Jul 17–Aug 17 | Shop Cauliflower → |
| Swiss ChardGood for direct sowing | Jun 11–Jul 9 | Jul 17–Aug 17 | Jul 17–Aug 17 | Jul 17–Aug 17 | Shop Swiss Chard → |
| CollardsGood for direct sowing | Jun 4–Jul 9 | Jul 17–Aug 17 | Jul 17–Aug 17 | Jul 17–Aug 17 | Shop Collards → |
| GarlicUsually transplanted or planted | Not recommended | Sep 16–Oct 17 | Not recommended | Sep 16–Oct 17 | Shop Garlic → |
| GreensGood for direct sowing | Not recommended | Not recommended | Aug 1–Sep 16 | Aug 1–Sep 16 | Shop Greens → |
| KaleGood for direct sowing | Jun 4–Jul 9 | Jul 17–Sep 1 | Jul 17–Sep 1 | Jul 17–Sep 1 | Shop Kale → |
| KohlrabiGood for direct sowing | Jun 19–Jul 24 | Aug 1–Sep 1 | Aug 1–Sep 1 | Aug 1–Sep 1 | Shop Kohlrabi → |
| LettuceGood for direct sowing | Jun 26–Jul 24 | Aug 1–Sep 16 | Aug 1–Sep 16 | Aug 1–Sep 16 | Shop Lettuce → |
| PeasGood for direct sowing | Not recommended | Not recommended | Jul 17–Aug 17 | Jul 17–Aug 17 | Shop Peas → |
| RadishesGood for direct sowing | Not recommended | Not recommended | Aug 1–Sep 16 | Aug 1–Sep 16 | Shop Radishes → |
| SpinachGood for direct sowing | Not recommended | Not recommended | Aug 17–Sep 16 | Aug 17–Sep 16 | Shop Spinach → |
| TurnipsGood for direct sowing | Not recommended | Not recommended | Aug 1–Sep 16 | Aug 1–Sep 16 | Shop Turnips → |
No crops match that search.
Use the dates with confidence
How to Read This Calendar
Start indoors
Sow in trays under strong light. The window is timed so seedlings reach transplant size without becoming root-bound.
Transplant or plant
Harden seedlings off for about a week. Perennial crowns, sets and seed potatoes are included in this column.
Direct sow
Plant seed directly into prepared soil. Cool-season crops can begin before frost; heat-loving crops need warm soil.
Last planting
This is the practical end of the selected window—not a guarantee. Variety maturity and unusual weather can move it.
Slidell soil checkpoints
Let Soil Temperature Be the Final Check
Calendar dates start the conversation. A simple soil thermometer helps confirm that the seedbed is actually ready.
Selected for the current planting window
Seeds to Plant Now
Garland Serrate Leaf, Specialty Greens Seed
Selected from Urban Farmer’s current greens collection for this city’s planting window.
Shop this seed →
Green Salad Bowl, Lettuce Seed
Selected from Urban Farmer’s current lettuce collection for this city’s planting window.
Shop this seed →
Bloomsdale, Organic Spinach Seed
Selected from Urban Farmer’s current spinach collection for this city’s planting window.
Shop this seed →References: LSU AgCenter Louisiana Vegetable Planting Guide and When to Plant chart, with locally adjusted frost-date planning estimates; USDA 2023 Plant Hardiness Zone Map; and Open-Meteo modeled soil-temperature data. the humid north shore of Lake Pontchartrain in southeast Louisiana contains meaningful neighborhood microclimates, so dates and live conditions are planning estimates, not guarantees.