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Northeast

I'm no expert looks like your nitrogen has dropped and that certainly can affect the proper green color to the plant and growth. If I'm correct you can dissolve urea in water spray it out there and wash the plant off to avoid burn or use calcium nitrate to achieve the same.

5/25/2026 11:38:43 AM

Northeast

Did Western labs give a suggestion on adding Nitrogen?

5/25/2026 11:41:35 AM

Topsfield, MA

My nitrogen was a bit low but I've actually tried adding some calcium nitrate last week and no improvement at all. Almost like the plant didn't even realize I gave it calcium nitrate with a continued fall in the health of the plant and going yellow, stunted

5/25/2026 12:06:43 PM

Northeast

You can add every 3 days again if I'm correct, you should check with someone else I don't want to hurt your plants. Also, cool temps and clouds no not help photosynthesis. Hang in there get some opinions directly and execute another plan. Frank

5/25/2026 2:12:03 PM

Grittyville, WA

His vine would be flat on the ground and the old leaves would be the yellow leaves, if it was nitrogen. Your nitrogen is fine Henry. But if someone wants to suggest a better sulfer source to test the sulfer issue that could be helpful.

I find that ammonium (which is a very different form of nitrogen) doesnt cause leaf bloat as much as straight nitrate.

Adding a half cup or even a cup could elevate nitrogen but that can be resolved later.
You'll just have to cut off the nitrogen at some point so that the pumpkin doesn't get too much.

People use gypsum for sulfer but it wont be as soluble and I've not gotten really good plant response from gypsum despite the fact that my tests say I need it.

Any other sulfer ideas he could try? Some people use sulfuric acid as a ph reducer. That could be even better. But you wont harm the plants to try ammonium sulfate. It makes a lot better sense than calcium nitrate and should give very nice results. Im 90% certain, but yeah, staking my reputation on this now lol. Good luck with it.

5/25/2026 2:39:45 PM

Grittyville, WA

Sorry if I sound dismissive of other ideas but in my mind I'm zeroed in on this being sulfer, at this point.

5/25/2026 2:41:00 PM

Topsfield, MA

Ketchup, after all the things that I have thought of after hitting wall after wall, your guess that it is a sulfur issue is the most realistic right now. I agree with you so thank you. Let's see what happens over the next week. I am very curious to see if the sulfate ammonium changes the plants!

5/25/2026 3:00:25 PM

Grittyville, WA

Explosive growth or at least a happy plant, soon. Fingers crossed for you!

5/25/2026 3:09:38 PM