Love the stuff. I put it up in jars and use it instead of cranberry sauce for Thanksgiving.
My rhubarb isn't looking as good as usual this year either. The plants did well throughout the spring and early summer, but have recently "flattened" out. I know a couple of them need to be lifted and divided because they sent up flower spikes. No grasshoppers here but last year the slugs just about ate my garden bare. Do you keep hens? My girls eat grasshoppers like popcorn, they actually chase them around until they catch them.
I finally, after 4 or 5 years, have successfully grown 10 onions. I used to have a big patch every year, enough to last all winter. Then we got Allium Leaf Miner (invasive pest from Europe). This spring, I followed advice from Penn State extension service: Planted sets very early, under cover, then dusted them with spinosad a few times. Seems to have worked, so next year I'll try a bigger bed. Depressing.

My onions, started from seed, are looking good. I don't plant sets any more because they don't store well. No chickens here. I wish for some. Used to raise chickens, sell eggs, etc. My neighbor with the market garden has 200+ hens plus a few guinies and they can't keep up with the bugs!

Check with your state extension office about "Allium Leaf Miner". This is a new pest from Europe, appeared here in PA about 5 years ago. I don't know if it's spreading west (I hope not) but it's really hurt onion/garlic growing here in PA. I used to just pop onion sets/garlic in the ground and let it grow but now it's a big complicated routine with covers, timing, sprays, etc. These are little flies, lay eggs on onion leaves, the larva burrow into the bulb and destroy it.

So far the allium leaf miners are not a problem here. Sorry they are giving you such problems.