Humans have co-existed with leeches for so long, according to Siddall, that just about every language has a word for leech. 3. theyâve made a comeback in medicine.
The lettuce aphid is a problem worldwide and has recently become problematic in the western United States and Canada (Liu and McCreight 2006; McCreight 2008). However, the first three species of aphids listed above are most economically damaging in Florida (Nuessly and Webb 2010). Although heavy aphid pressure can stunt plants, the major problem aphids cause is head contamination, which makes lettuce unmarketable.
Pour the concoction into a plastic spray bottle and use it to mist the plants aphids are attracted to. (For best results, try it at dawn before the sun starts blazing.) Aphids hate the smell as much as we do. What to Plant to Repel Aphids. Want to repel aphids before they start? Just plant mint and nasturtiums, which will aphids hate.