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.
Not my finest moment. TO FIX: To rid your plants of aphids, physically remove as many as possible by brushing or shaking them off. Then use a spray bottle with water to spritz off any hangers-on (they're sticky). Then fill that spray bottle with 4 cups of water and 4 drops of dish soap. Spray the leaves (make sure to get the under sides!) with the solution and rinse it off with clean water after 2 hours.