Safe, effective grub control products now at Plants Unlimited
Plants Unlimited is pleased to offer two products using the first Bacillus thuringiensis galleriae (Btg) bioinsecticide proven effective against a wide range of white grub species throughout all stages of their development – Phyllom BioProducts’ grubGone and beetleGone.
Unlike other biological or chemical grub control products, grubGone and its wettable alternative beetleGone provide effective control from larvae to beetle. What’s more, grubGone and beetleGone have a higher level of biological activity than other products and no adverse risks to pollinators or other beneficial insects, including ladybugs.
When used as a foliar spray, beetleGone works well against adult beetles. grubGone is a granular application that targets larvae. Used in conjunction these products have a longer window of use than other products, while also performing better overall.
Many of our customers currently use milky spore (Paenibacillus popilliae, formerly called Bacillus popilliae) for grub control, yet several universities have questioned the overall efficacy of milky spore in New England’s milder climate. (See below for references.)
The charts below summarize the comparative efficacy and other key features of grubGone and milky spore.
Efficacy against common pests
|Japanese beetle grub||Yes||Yes|
|Oriental beetle grub||Yes||No|
|Asiatic garden beetle grub||Yes||No|
|Northern masked chafer||Yes||No|
|Southern masked chafer||Yes||No|
|May/June beetle grub||Yes||No|
|Green June beetle grub||Yes||No|
|Western masked chafer||Yes||No|
|Annual bluegrass weevil||Suppression||No|
Note: grubGone has not proven effective against the Colorado potato beetle.
Comparison of key product features
|Overwinters||No||Not in New England|
|Soil temperature range||No restriction if grubs are active||60-70 degrees for 3 months|
|Effective in Northeast US||Yes||Questionable|
|Applications per season||1||3|
|Works in application season||Yes||No|
|Works preventatively||Yes||Yes (after 3 years)|
|Shelf life||2+ years||Unknown|
Support for grubGone and beetleGone
Among the scientific voices supporting the use of these products is Dr Richard Cowles of the Connecticut Agricultural Experiment Station. Dr Cowles wrote in his article “The Big Picture: Grub control, neonics and bees”, “Phyllom’s Btg products are produced via fermentation like beer, wine or tofu. All ingredients used are food grade and the primary ingredients are plant sources of carbohydrates and protein.”
“Adoption of either of the new white grub insecticides (Bacillus thuringiensis var. galleriae and chlorantraniliprole) over the previous choices is completely compatible with using the lawn as valued forage for pollinators, and eliminates one of the justifications (protecting bees from pesticides) for eliminating blooming plants from lawns.”- Dr Richard Cowles, Connecticut Agricultural Experiment Station
You can read the full article here: http://www.conngardener.com/images/neonics.pdf
The chart below details product application throughout the Japanese beetle life cycle from grub to beetle. It provides general guidelines for timing of application to ensure the longest window of use. It also helps explain why accuracy of application is so important.
Japanese beetle life cycle and product application
From New York State Integrated Pest Management Program and Cornell University Cooperative Extension. “Grubs in Your Lawn? A guide for lawn care professionals and homeowners”. Available at: https://ecommons.cornell.edu/bitstream/handle/1813/43856/grubs-in-lawn-bro-NYSIPM.pdf?sequence=1
Product information is available from Phyllom BioProducts at http://www.phyllombioproducts.com/turf.html
University articles questioning the efficacy of milky spore include:
University of Connecticut Home and Garden Information Center, 2016. “Grub Problems in Turf”. Available at http://www.ladybug.uconn.edu/FactSheets/grub-problems-in-turf.php#
Cornell University Turfgrass Program. “Insect Management”. Available athttp://turf.cals.cornell.edu/pests-and-weeds/insect-management/
University of Vermont Extension, 2011. “Identifying and Managing White Grubs in Turf”. Available at http://pss.uvm.edu/pesp/PAR/PAR-2011Spring.pdf
University of Maine Cooperative Extension, 2016. “Pest Management Fact Sheet #5037 – Japanese Beetle”. Available at https://extension.umaine.edu/ipm/ipddl/publications/5037e/