[stentman]

Sorry no pics. After clearing my pea bed I started to de-pod the peas (50+ pods) all except one were absoultely fine. The one had what looked like brown sugar inside and the peas were half eaten along with a small green caterpillar about 3/8" long. Having used the site search function and googled "pea moth" I reckon that's the culprit . But no sign of an entry hole, though I may have wrecked that whilst opening the pod. So was it pea moth? Why only one pod infected? Will it be an issue next year even if I crop rotate as I assume the moths simply fly to the nearest pea plant when they emerge.

[mumofstig]

I only had a couple of pods affected this year..........so not a bad year
I don't think you know from one year to the next, but the earlier peas always suffer less than later sown ones.
Considering that my first sowing failed and I resowed at the beginning of June, I think I got off lightly

[DD.]

I wouldn't ask why only one. I'd be grateful!

[peapod]

The pea moths get grubs into pods by laying eggs on the emerging pea foliage. These eggs then hatch and the grubs crawls into the developing pods by making a tiny tiny hole (that cant be seen by the naked eye)

I hate them - you were lucky to get away with one as DD says, I had a load on my first sowing 

[stentman]

So it was pea moth then?
Seems I was lucky to get only one infected pod so I'll take that as a piece of good fortune.

[azubah]

Your description does not sound like pea moth to me.
My experience of them is that they look like maggots, white, not green.
I have not yet seen any this year.
Often there are several in a peapod.
Have a look at:
http://www.gardenaction.co.uk/techniques/pests/pea-moth.htm

It says brown/green on the above link, but in my experience they are more white than green.

[DD.]

I think the colour depends on the maturity of the grub. I've certainly had green ones.

Grub

The description of the excrement is a classic one.

[peapod]

Ive had green ones a LOT