Experts and BHG readers answer.
Is it too late to fertilize?
I live in zone 5 I forgot to fertilize my perennials this August. Is Sept to late to fertilize them?
Mid-September is not a good time to fertilize perennials in Zone 5. By fertilizing this late, you can stimulate new growth which may be more subject to winter injury. It would be better to wait until next spring.
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