cross-posted from: https://lemmy.world/post/17588319
[Image description: a thicc green hornworm hanging onto the stem of a tomato plant. The hornworm is speckled with little white dots, has eyespots and angular white stripes down his side, and the namesake sharp little spike of a horn on its butt.]
If you’ve got one you probably have a bunch. Check under every leaf and get rid of those fuckers.
I wish that they were the biggest problem bug for my tomatoes, but that title goes to the godforsaken spider mites. They decimate my plants every summer as soon as the weather turns hot, and I’ve tried so many things to combat them.
This year I’ve applied a couple rounds of predator mites, and in addition to some ruthless pruning of affected plants, I feel like I’m actually holding ground in the battle. Though really hoping that the predator mites will establish a population, as they’re a pricy solution.
Is safers soap something you would be interested in maybe using? It’s safe on vegetables after washing them.
Yep, I’ve tried various soaps and all kinds of oils, tried regularly spraying down the leaves to keep them dust free and the humidity up, tried removing plants at the first sign of infestation, all of it seemingly futile under the literal avalanche of mites I get every summer. If I miss a few days of these preventative measures, my poor tomatoes will have leaves gone from a slight sign of damage to a fully webbed death. And it’s not like my plants are water starved either, I use drip irrigation under thick mulch, so the soil stays moist even on the hottest days.
It’s been really constraining on my growing season. I’m often able to get plants in the ground around mid-February and get a good harvest in May, but June/July is spent just watching all my plants die a lingering infested death. I’m in 10a, so I should easily be able to get a second summer crop in, but new seedlings planted at the end of spring seem to fare even worse than their established brethren. Hence why I’ve finally decided to spend the $$$ on predators, really hoping that their population establishes and tames the micro menace.
Predator mites work best on corn (they eat the pollen) and in the greenhouse. As you’ve noticed when it gets hot they don’t do as well.
Stethorus punctillum work for when it gets hot.
Yeah, would be nice if I were in a closed environment and could keep them from running away!
I’ve tried neoseiulus californicus and galendromus occidentalis, and also zelus renardii as a generalist predator. I’ve considered stethorus punctillum, might have to give them a shot too.
