>> a strange disease hit them. Brown iridescent spots on some and what looked like rust on others. The plants were declining
>> I took a risk and HEAVILY pruned the damaged leaves. Probably at least 50% of them. Within 3 days they were back to there previous size! The condition is still present but only on about 25% of the leafs. I prune the worst regularly but the pants seem healthy overall and are blooming and producing
Wow, good to know. My snow peas tend to develop a white powdery covering once they get old (mildew?), but I take that as a sign that it's time for them to retire.