You will use 1-3 ounces of Atrimmec Plant Growth Regulator per gallon of water for most foliar sprays for growth control. Small trees up to 16 feet require 1-5 gallons per tree, and larger trees 20-30 feet require 10-15 gallons of solution per tree. Thorough coverage provides best results. Both cherry laurel and barberry are listed with rates on the product label. We are not sure this product would be effective on the magnolia or boxberry since those species have not been tested or shown to be affected per the product label. Be sure to read the entire label before using this product.
Atrimmec Plant Growth Regulator is not labeled specifically for Loropetalum, fringe flower, witchhazel (the family of this plant), or evergreens, so we are not sure whether it would be effective or tolerated on this plant. Pruning seems to be recommended and most effective for keeping this plant to desirable sizes. Different cultivars will require slightly different care, too. You can read more about Loropetalum in this article from the Clemson Extension. If you are going to try this on your loropetalum, then we would recommend treating a limited number of plants before treating all of them.
No, Atrimmec Plant Growth Regulator (PGR) is not labeled to be applied on anything edible, including herbs such as rosemary. We are not aware of a plant growth regulator that could be used on rosemary or other herbs.
Atrimmec Plant Growth Regulator (PGR) is labeled to be sprayed on shrubs and ornamental plants, such as privets. Per the product label: “This product is a systemic plant growth regulator applied as a foliar spray. It is absorbed by the leaves and translocated to the shoot tips. Growth retardant effect is limited to sprayed branches. This product is absorbed through the leaves and translocated to the shoot tips. Pinching effect is limited to sprayed branches.” So any branches that you spray will be affected by the product.
Atrimmec Plant Growth Regulator (PGR) doesn’t actually kill anything but it could effect the growth of other products if they are inadvertantly contacted during application. Only time will tell if they are affected though.
Yes, Atrimmec Plant Growth Regulator is labeled for use on yaupon holly. You will use 3 oz. per gallon of water.
Yes, Atrimmec Plant Growth Regulator (PGR) can be used to slow the growth of red tip, oleander, and sage.
We apologize but the Atrimmec Plant Growth Regulator (PGR) does not list this type of tree on the product label so we are not sure whether it would be effective or tolerated on these trees. You may try reaching out to the manufacturer directly to confirm if it could be used, PBI Gordon can be reached at 800-821-7925
For a more formal appearance: Trim the shrub or groundcover to shape, leaving at least two pairs of extended leaves on each shoot to absorb the spray. Apply this product within three days.
For a more natural appearance: Either trim only the long, wild shoots and immediately apply this product spray, or trim shrub or groundcover to shape, allow the new shoots to grow at least two inches, and then apply this product spray.
Trimming after the application of Attrimec may interfere with the action of the product.