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plants that repel insects
May. 6th, 2009 08:26 amThis is interesting...
Given what I've planted, I should perhaps find some tansy. Seems to work for borer, squash bug, AND cucumber beetle. Assuming this site (www.thriftyfun.com/tf29648744.tip.html) is correct...
Then again, on another site, I found this:
"Annual Marigolds can be used anywhere to deter Mexican bean beetle, squash bug, thrips, tomato hornworm, and whitefly. They are also known to repel harmful root knot nematodes (soil dwelling microscopic white worms) that attack tomatoes, potatoes, roses, and strawberries. The root of the Marigold produces a chemical that kills nematodes as they enter the soil. If a whole area is infested, at the end of the season, turn the Marigolds under so the roots will decay in the soil. You can safely plant there again the following spring. Nasturtium is another annual, in this case a trailing vine, that keeps away Colorado potato bug, squash bug, and whitefly." (www.sheridannurseries.com/gardensite/subGARDENTIP25mainframe.htm)
Which implies that the $16.99 I spent on a flat of marigolds is probably worth what I paid for it. I may try to throw some Nasturtiums back there too, since I like them anyway and they taste yummy in salads. I could train them up the fence, maybe...
--J
| INSECT PEST | REPELLING PLANT |
| Ants | pennyroyal, spearmint, southernwood, tansy |
| Aphids | garlic, chives and other alliums, coriander, anise, nasturtium and petunia around fruit trees |
| Borer | garlic, onion, tansy |
| Cabbage moth | mint, hyssop, rosemary, southernwood, thyme, sage, wormwood, celery, catnip, nasturtium |
| Colorado potato beetle | green beans, horseradish, dead nettle, flax, catnip, coriander, tansy, nasturtium |
| Cucumber beetle | tansy, radish |
| Cutworm | tansy |
| Flea beetle | wormwood, mint, catnip, interplant cole crops with tomato |
| Japanese beetle | garlic, larkspur, tansy, rue, white geranium |
| Leafhopper | petunia, geranium |
| Mexican bean beetle | marigold, potato, rosemary, savory, petunia |
| Mites | onion, garlic, chives |
| Nematodes | marigold, salvia, dahlia, calendula, asparagus |
| Rose chafer | geranium, petunia, onion |
| Slug | prostrate rosemary, wormwood |
| Squash bug | tansy, nasturtium, catnip |
| Tomato hornworm | borage, marigold, opal basal |
| Whitefly | nasturtium, marigold |
Given what I've planted, I should perhaps find some tansy. Seems to work for borer, squash bug, AND cucumber beetle. Assuming this site (www.thriftyfun.com/tf29648744.tip.html) is correct...
Then again, on another site, I found this:
"Annual Marigolds can be used anywhere to deter Mexican bean beetle, squash bug, thrips, tomato hornworm, and whitefly. They are also known to repel harmful root knot nematodes (soil dwelling microscopic white worms) that attack tomatoes, potatoes, roses, and strawberries. The root of the Marigold produces a chemical that kills nematodes as they enter the soil. If a whole area is infested, at the end of the season, turn the Marigolds under so the roots will decay in the soil. You can safely plant there again the following spring. Nasturtium is another annual, in this case a trailing vine, that keeps away Colorado potato bug, squash bug, and whitefly." (www.sheridannurseries.com/gardensite/subGARDENTIP25mainframe.htm)
Which implies that the $16.99 I spent on a flat of marigolds is probably worth what I paid for it. I may try to throw some Nasturtiums back there too, since I like them anyway and they taste yummy in salads. I could train them up the fence, maybe...
--J
