Garlic can control diseases
that damage cucumbers, radishes,
spinach, beans and tomatoes.
Onion spray can be used as a natural fumigant.
Saprophytes (tree
fungi) can aid trees in resisting bark canker, decay fungi and leaf rust
fungi.
Typically, insects are attracted by scent and, as a
result, plants can be used as attractants to
lure pests away from garden crops. Insects lay their
eggs and feed on the attractant plants and garden
crops are . Two such
attractants are mustard and nasturtium.
Insect repellants can be prepared from citronella, eucalyptus, cedar wood, clove, rose
geranium, ginkgo, elder, pyrethrum, lavender, thyme, wintergreen, sassafras, pine tar,
etc.
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