It’s been a month of pests for Gardening Nirvana as we’ve worked our way through aphids, scale and now thrips. Three different plants, three different pests, all living within a few feet of each other.
Foreground (emerging sunflowers); under window (Viburnum tinus), right of photo (scale-infected Magnolia)
Thrips now reside on the lower leaves of the Viburnum tinus immediately outside of our home office window. It took us two summers to figure out what that…uh…pungent smell was. We knew it was organic in nature, but it was so odoriferous, we assumed a small animal had died under the house or deck. The smell eventually went away, the plants looked fine and we didn’t give it another thought.
Spring rolled around again, then summer and…that smell! Aren’t you glad you are only reading about it? The damage seemed to be happening at the base of the shrubs and along the back, making me wonder if it was lack of air circulation. My husband’s sleuthing and a magnifying glass revealed that yes, we had a third infestation on our hands: thrips.
Plant Damage
Thrips
Through the wonder of the Internet and our postal service, a shipment of lacewing eggs, nested in bran, is headed for our front door. When the tiny larvae emerge they feast on the thrips. Adults need nectar and pollen to survive, so it’s important to have insectary plants in your garden to support the adult population. The exciting news is that my sunflowers will flower within the next week or so, providing pollen to the emerging adults. They like Cosmos and Sweet Alyssum, too, also growing our the garden.
Resources:
- Beautiful and beneficial green lacewings
- Beneficial insects 101
- Do you have thrips? Identify them here.
- A list of insectary plants is on page two of this pamphlet from Our Water- Our World.
Gardening Nirvana 