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Connecticut

Does anyone know if a pumpkin plant will tolerate copper spray or a sulfur spray for fungal control? I'm thinking of going copper (because it's what I have).

9/22/2007 10:08:33 AM

Mill Bay, British Columbia

Copper works and is recommended for pumpkins (should be on the label) and works for differant varieties of fungal problems (again should be on the label)

I've used it in past years and works great.

We only use sulphur in a paste for cracks and splits (we don't have captan in Canada) and would not use or recommend it for pumpkins (again on the label) as it is not rated for curbits.

9/22/2007 10:19:32 AM

Ohio

I've used a liquid copper/soap product from an unnamed, overpriced, online, store, and it has never harmed my plants.

Sulfur can harm your plants if you have used oil based sprays on your plant, as well.

9/22/2007 11:29:31 AM

My hort professor said, just the other day, to make sure the leaves are dry when you use sulfur, because... believe it or not... if there's water on the leaves, badabing badaboom, sulfuric acid forms and can burn em.

9/22/2007 12:02:45 PM

[email protected]

Yep...sulfur can b real nasty. Hence the billions spent developing better fungicides.

But most important of all is knowing WHICH DISEASES you are trying to control. There is no silver bullet cure-all that knocks every disease down ti it;s knees.

What diseases?

9/22/2007 8:58:20 PM

White Plains, NY

I paint bad spots and cut off areas with sulfur 3 parts and sevin l part. I have not heard that sulfur with water turns to sulfuric acid. I assume that occurs any time water gets in the mix. I haven't noticed any burn type damage on the stems or fruit. What say you?

9/23/2007 8:56:21 AM