I planted some "Little Marvel" peas in my garden a while back. I planted them
> in a raised garden. The garden box is 1 foot deep and filled with a mix of
> turkey manure and loam. I don't know the ratio; I just bought the Planter's
> Mix. They grew really, really well for a little while. Some of the plants
> climbed as high as 2 1/2 feet in a short time. Then I noticed that the leaves
> at the bottom of the plants started turning brown around the edges. This
> contiued on all plants, working its way up the plant. The plants are now
> almost completely dead. Several of them had even started to bear fruit. What
> could have caused this. My other plants (except lettuce, but that a diffrent
> story) are doing fine. Could it be that the soil was just to rich for the peas?
> Too high in nitrogen or something?
>
Now some of my other vine plants seems to be exhibiting some of the same signs that the peas did. I have pole beans, acorn squash and pumpkin that the leaves are starting to turn brown on the edges. This browning starts with the leaves at the very bottom and starts to work it's way up the plant.
Strangely, my onion, carrots, broccoli, collards, cabbage, lettuce and corn appear to be fine. It seems to only be affecting vine plants.
What am I doing wrong?
(this was originally posted to austin.gardening... i'm in austin, tx)