yellowed leaves from too much sun/not enough water?

roundrockgardenerSeptember 22, 2009

I have squash and zucchini growing - they are about 3 weeks old from planting. They have several true leaves, but half of them (the older leaves) turned yellow yesterday. The weather was 95 degrees yesterday, and I watered them in the morning in anticipation of the heat.

They are planted in raised beds, with a loose soil with plenty of organic amendments (worm castings, compost, decomposed manure). While I had one inch of mulch already on the soil, I decided (when I got home yesterday) to spread out more mulch to help protect the roots better. Does this sound like the plants just got too hot? They leaves aren't sagging, just yellow and curling on the edges. I've also noticed white trails left on the cotyledons - I assume left by slugs?

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yellow/pale leaves normally mean: too much water, too little sun and/or not enough nitrogen.

    Bookmark   September 22, 2009 at 6:54PM
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Are you sure all of your compost is finished? If it isn't, it may be tying up your Nitrogen. Maybe a little fish emulsion will perk them up.

    Bookmark   September 24, 2009 at 5:36PM
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