Hello readers,
In this series I'm going to break down the basics of garden pests, what to look for, what climate attracts them and methods of getting rid of them. Today's topic: Flea Beetles.
When do they emerge?
Late june through mid-September
When temps are between 55-75 degrees, lows in the 50’s.
Life Cycle?
Flea beetles produce about 3 generations per year
They have a 3-part life cycle
Eggs are layed in late summer, after initial feeding period at the base of a plant stem
Larvae hatch and begin in the soil, feeding on organic matter and roots
Then adults emerge from the soil to feed on foliage
What do they look like?
They are small beetles, only 1/16”
They have strong back legs and jump like fleas, so they’re hard to spot and catch
Colors vary from black to tan, sometimes with stripes or spots and bright colors mixed in.
It’s easier to spot their destruction rather than the bug themselves (unless you use sticky insect traps.)
How to ID damage?
Adults leave “shot holes” in leaves, especially young seedlings
New leaves are usually targeted first, leaving a lacy appearance
Plants can survive some damaged leaves, but flea beetles carry bacteria, viruses and other diseases (blight, wilt) from one plant to the next
How to Avoid Flea Beetles?
Delay transplanting or installing new plants during beginning of season.
Till the earth to dislodge any hiding flea beetles
Companion planting
Strong scented plants like Catmint, Sage, Mint, Hyssop deter them
Nasturtium, Radishes, Basil will draw them away, because they prefer feeding on these
How to Control the issue?
Natural Remedy:
2 cups isopropyl alcohol, 5 cups of water, 1 Tbl sp liquid soap
Spray a small area and wait 24 hours to see results. If plant seems alright, spray all foliage to dripping.
Dust plant with Talcum powder
Bio Control:
Introduce Green Lacewing
Adult bigeyed bugs
Damsel bugs
Parasitic wasps