Plant sales and jumping worms: University of New Hampshire Cooperative Extension, 2020
A circular band (clitellum) completely encircles the body, lies flat against the body rather than raised, and looks cream-colored or milky white on mature worms. The clitellum is relatively close to the head, at segments 14-16. (source: Chang, 2016)
Dobson, Annise; The visible invisible: impacts of invasive jumping worms, Maryland Invasive Species Council, November 2019
The presence of distinctive granular soil that looks like spent coffee grounds or ground meat may be your first indicator of jumping worms. This granular material is mostly worm castings.
Plant sales and jumping worms | University of New Hampshire Cooperative Extension
Inspect plant pots for granular-looking soil before bringing plants home. Purchase bare-root plants, if possible.
Physical removal methods:
Why are they a problem?
When the presence of jumping worms/cocoons is unknown, as a precautionary measure, plants can be bare-rooted and potted into sterile potting medium prior to exchanges or sales. The University of New Hampshire Extension explains these procedures .
They live only at the surface level of the soil and leaf litter (epi-endogeic) and therefore do not help gardeners with deep soil aeration, nutrient movement, or water infiltration.
Timing is everything when it comes to using corn gluten. If the weed seeds have already germinated and sprouted, this technique won’t work. To protect a newly planted (but unseeded) bed from a weedy invasion, work corn gluten meal into the top 2 to 3 inches of your soil, and water thoroughly. Lawns and existing flower beds can be top-dressed with corn gluten meal. Do not fertilize the treated area for a month after application because corn gluten meal is high in nitrogen.
How to Plant Tulips in Pots
Moles dislike garlic , so try dropping some crushed cloves into the run. You can also repel them with a castor-oil concoction. Mix 8 tablespoons of castor oil and 1 tablespoon of liquid soap in 1 gallon of water . Dig down into one of the critter’s runs, and pour the mixture inside.
A tonic for black spot and powdery mildew on roses
Slugs and snails are responsible for wiping out many a gardener’s dreams. I create barriers around prized plants to protect them from annihilation. Copper strips produce a shock to snails and slugs trying to cross them. Wrap inexpensive, thin copper, found in craft stores, around pots, plants, and trees to create a protective barrier. Pine needles , coffee grounds , crushed eggshells , or diatomaceous earth (fossilized, silica-shell remains of prehistoric diatoms that desiccate insect bodies) provide a scratchy barrier and should be reapplied after a rain. Always purchase natural diatomaceous earth because swimming-pool grade contains crystalline silica, a respiratory hazard.