When using Atrimmec Plant Growth Regulator you would want to use a surfactant like Prime Source Duo Stick. This is going to be a proprietary blend of methylated seed oil and organosilicone surfactants.
Atrimmec Plant Growth Regulator (PGR) is labeled to be applied to hedges, shrubs and trees.
According to the product label for Atrimmec PGR:
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.
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.
Yes, Atrimmec Plant Growth Regulator is labeled for use on yaupon holly. You will use 3 oz. per gallon of water.
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
Dikegulac sodium is translocated to its apical meristems, where it inhibits DNA synthesis. This suppresses apical dominance in the plant and can stimulate lateral branching, resulting in a bushier growth habit. Dikegulac sodium is sometimes used to inhibit fruiting and flowering.
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.
Unless otherwise indicated on the product label for a specific plant, after an application of Atrimmec Plant Growth Regulator (PGR) in spring, plants can usually be maintained in acceptable shape for a full season. Under extremely good growing conditions or in areas with a long growing season, two treatments per year may be considered on certain species. However, in areas with a short growing season only a single spring treatment is recommended.
Boxwoods are not listed on the product label for the Atrimmec Plant Growth Regulator (PGR), we would recommend reaching out to PBI Gordon directly to confirm if you can use. They can be reached at 800-821-7925
Atrimmec Plant Growth Regulator (PGR) may be applied as a drench according to the label directions on pages 3-4. However, the label only specifies applications to ficus/fig specifically as a foliar spray to help maintain shape for the growing season. You may want to test a few plants with drenching as directed before treating all of them to test the effect on fruit set on your specific plants. You may also reach the manufacturer directly at 800-821-7925.
Atrimmec Plant Growth Regulator (PGR) is labeled for Ligustrum to help regulate or control growth in landscape beds, for suppression of flower and fruit formation or for chemical pinching in nurseries or greenhouses.
Please refer to the product label for recommended application rates based off the specific application.
Atrimmec Plant Growth Regulator (PGR) is labeled for a wide variety of ornamentals but does not specifically mention Hydrangeas on the label. We recommmend contacting your local extension office for assistance in a choosing a Plant Growth Regulator that is successful in your area.
Atrimmec Plant Growth Regulator (PGR) is labeled to be applied to hedges, shrubs, and trees. The label states "Temporary reduction or suppression of flowering may be observed in shrubs and groundcovers such as alyssum, oleander, star jasmine, and gazania, but normal bloom returns 3 to 6 weeks after spraying."
Atrimmec Plant Growth Regulator is not labeled to reduce the growth of kikuyugrass. If you are looking for a plant growth regulator to help reduce the growth of it, you can use T-Nex Plant Growth Regulator.
If you are looking to control it around ornamentals or Perennial cool season grasses like Bluegrass, Ryegrass, or Tall Fescue then you can use Hi-Yield Triclopyr Ester. Please review each product label for complete application instructions.
Yes, when spraying larger or taller trees a mist blower is recommended over a sprayer due to the height distances mist blowers reach. If the Sthil equipment has mist blowing capabilities, this would be ideal for treating these large trees.
For example, the Tomahawk Power Backpack Fogger TMD14 with Turbo Boost has a 40 ft Vertical Reach and 25 ft Horizontal Reach or the Maruyama MM181 Mist Blower has a reach of up to 36 feet vertically and 45 feet horizontally.
The Atrimmec Plant Growth Regulator (PGR) is not a herbicide and will not kill or prevent germination of poa annua. It may have the same "slowing growth" effect on certain weeds as they do on grasses, but it will not reduce the amount of seed heads.
Please view our Poa Annnua Treatment Guide for pre and post emergent herbicide recommendations.
