5 Crops You'll Regret Not Planting in September (If You Garden Somewhere Hot)

What to plant in September if you live somewhere hot — and the two crops on every fall planting list that failed in my bed at under 20% germination. I sowed five crops into one raised bed in September in a zone 9+ desert garden: Mississippi Silver cowpeas, Provider bush beans, Green Magic broccoli, Black Seeded Simpson lettuce and Bloomsdale Long Standing spinach. Same soil, same drip line, same two weeks. The cowpeas came up above 90%. The spinach came up at 10%. It wasn't the water. It wasn't old seed. It was afternoon soil temperature — a number I wasn't measuring, and once I did, it explained every result in that bed including the one that shouldn't have worked. I go through all five worst to best, what the failure actually cost me in bed space, and the two free changes I'd make next September. If your soil is still sitting above 80°F (27°C) in the afternoon, your fall planting calendar and your seeds are telling you two completely different things. ━━━━━━━━━━━━━━━━━━━━━━━━ CHAPTERS 00:00 The count that made me stop trusting the calendar 01:00 What went in, and how hot it actually was 02:06 The worst result I've had in two years 03:36 Why watering more made it worse 05:36 The one that worked when it shouldn't have 07:18 What two weeks of empty bed actually costs 08:18 The row that closed canopy while I panicked 09:12 The best result in the bed, and it wasn't close 10:36 If you grow in pots, this is worse for you 11:42 Take your soil temperature at the wrong time of day 13:12 Recap and what I'm testing next ━━━━━━━━━━━━━━━━━━━━━━━━ SO NOBODY'S MISLED If you garden in zone 8 or cooler, September probably IS your fall planting month. This video is about zone 9 and hotter, where the calendar and the soil disagree. Don't delay your sowing on my account. The germination percentages are seedlings I counted in one bed in one season. Real numbers, but one garden — not a controlled trial, and not a claim about how these varieties behave everywhere. I measured my own air and soil temperatures. The germination cutoff figures I quote for lettuce and spinach come from reading, not from my own testing. I say so in the video and I'll say it here too. The transplant fix at the end is my best read of what happened, not something I've proven side by side. That's next September's video, and I'll show the counts whichever way it lands. ━━━━━━━━━━━━━━━━━━━━━━━━ VARIETIES IN THIS VIDEO Mississippi Silver cowpea · Provider bush bean · Green Magic broccoli · Black Seeded Simpson lettuce · Bloomsdale Long Standing spinach CONDITIONS Zone 9+ desert backyard · 4x8 raised bed · drip irrigation Afternoon air 92–95°F (33–35°C) · afternoon surface soil 82–85°F (28–29°C) TOOLS THAT ACTUALLY MATTERED A probe soil thermometer and a notebook. That's the whole list. ━━━━━━━━━━━━━━━━━━━━━━━━ NEXT VIDEO Black Seeded Simpson, direct sown versus tray-started and transplanted in. Same bed, same week, germination counted on both halves. This channel is about growing vegetables where it's genuinely too hot for the standard advice. Everything here is what happened in my own beds, including the parts that didn't work.