There was no update to this old article, but now that I think of it, this pesticide was actually effective.
Pesticides are a topic that I do not talk much about. There really is not much to say about them. Only a few are used at the farm, and only while certain destructive insects or perhaps mites are active. Even less pesticides are used in the landscape. It is not that I have serious issue with them. They are just not as useful for controlling pests as proper horticultural techniques are.
Plants that we would expect to require pesticides simply are not welcome in our landscapes. We know that snapdragons and hollyhocks are very likely to be detrimentally infested with rust. Therefore, we grow neither.
Roses live in some of the landscapes only because we do what we must to help them avoid infestation by the various pathogens that they are susceptible to. They get pruned aggressively in winter so that their new growth grows faster than aphid and mildew…
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