View Full Version : Slug control, nature concious

07-01-2002, 09:20 AM
Maybe useful info for some of the gardeners:

Pest control: Wake-up call

Existing commercial repellents for slugs and snails leave crop residues that are
not permitted by food-safety agencies. But caffeine — classed as 'generally
recognized as safe' by the US Food and Drug Administration — has
now been shown to do a similar job. Slugs are killed by a 1% solution of
caffeine sprayed onto leaves, and concentrations as low as 0.01% significantly
reduce feeding. In orchid snails, a 0.1% solution is enough to make the
heartbeat weak and irregular. It is not yet known how caffeine exerts its effect,
but its high solubility in water — a key component of molluscs' locomotor
mucus — could make it an effective contact poison.

For the full text:

07-01-2002, 12:38 PM
Now I know what to do with the grounds from each pot of coffee we brew. Thanks, Catcher!

btw, do you plant a lot of rye? Just wondering.