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Tomato advice needed: To prune or not to prune?
(mander.xyz)
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I'm no expert l, but my grandpa taught me to prune the suckers from the ground up to about 8 inches, then allow 2 sucker to stay and mature (so you have 3 prominent stems) and then continue to keep suckers pruned from there up. I have a pretty good harvest of tomatoes every year, so I haven't questioned the guidance.