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.
Lemon Solution. Save your plants from aphids with this simple formula: Boil 1 pint of water and add 1 lemonâs worth of zest. Let steep overnight. In the morning, strain the rind if desired. Pour liquid into a spray bottle and spray it on your plants. Soon, aphids will be a thing of the past. DIY Essential Oil Spray. Aphids eating up your plants?