Atrimmec Services in Hillsboro
Rapid plant growth is a common challenge for property owners in the Pacific Northwest. While our region’s rich soil and consistent rainfall keep landscapes vibrant, they also trigger aggressive growth cycles that can make keeping up with hedges and shrubs feel like a full-time job. Once the spring growing season begins, it doesn't take long for neatly trimmed plants to lose their shape and look overgrown.
Preferred Landscape Services has been helping homeowners and property managers navigate these intense growing seasons since 1998. We started as a small maintenance crew over 25 years ago and have since grown into a full-service provider for landscape design, construction, and ongoing care. As a licensed, bonded, and insured team, we are known for reliable scheduling and clear communication, earning the Angie’s List Super Service Award every year since 2006.
We use Atrimmec, a professional-grade plant growth regulator (PGR), to help manage fast-growing landscapes more efficiently. This treatment slows down excessive shoot growth while encouraging plants to become fuller and denser, helping them hold their shape longer between trims.
Call Preferred Landscape Services or contact us online for a free estimate and ask about adding Atrimmec to your landscape maintenance plan.
How Atrimmec Manages Growth
Atrimmec is a systemic treatment that landscape professionals use to keep plant growth under control. Once applied as a foliar spray, it is absorbed through the leaves and moves toward the shoot tips. Instead of stopping growth entirely, it reduces the rapid vertical "stretching" (apical dominance) that causes hedges and shrubs to look overgrown just weeks after they’ve been trimmed. As upward growth slows, the plant redirects its energy into lateral branching. This results in thicker, more compact foliage. For a homeowner, this means your landscape stays "picture-perfect" for a much longer stretch of the growing season, rather than looking shaggy shortly after the maintenance crew leaves.
Why Growth Control is Essential for Plants
Our local environment is essentially a greenhouse for certain species. With mild temperatures and regular rainfall, shrubs like boxwood, privet, and photinia can easily grow several inches in a single month during the peak of spring. Because of this rapid growth, we often recommend growth regulators for large privacy hedges, like laurel or arborvitae, which can be difficult and expensive to trim multiple times a year. Evergreens and arborvitae in particular benefit from this, as it supports the dense growth needed to hold a consistent, clean shape throughout the year.
This treatment is also a practical choice for formal gardens where boxwood hedges need to maintain a sharp, geometric edge without constant pruning. It works well in mixed borders where fast-growing shrubs tend to crowd out slower-growing perennials, and it can even be used on ornamental trees to reduce the production of messy fruit or seed pods that clutter driveways and patios. By managing these specific areas, we help your landscape stay balanced and tidy while keeping groundcovers like ivy from overflowing their designated beds and creeping onto walkways.
The Economic & Aesthetic Benefits
Using a growth regulator is a strategic investment in your property. While there is a cost for the application, the long-term savings are significant, primarily through reduced maintenance costs. Most properties treated with Atrimmec require up to 50% fewer trimming visits throughout the year, which can lead to lower overall landscaping bills over a full season. Beyond the financial savings, the treatment leads to noticeably healthier plants. Because your shrubs are not being pruned back as often, they experience less stress and have more time to establish a sturdy structure. The resulting denser branching also makes your plants more resilient against Oregon’s winter weather, helping them withstand wind and heavy snow loads.
As a RainBird® Select Contractor®, we also consider how your plants interact with your irrigation system. Slower-growing plants often require fewer nutrients and less water, which improves the overall water efficiency of your property. This holistic approach makes your entire landscape more sustainable while keeping it looking manicured and lush with less intervention.
Timing & Application for the Portland Metro Area
In Hillsboro, timing is the most critical factor for success. We typically apply Atrimmec in the spring once the first flush of new growth has appeared. This allows the product to work with the plant’s natural hormones during its most active phase. Because we are also certified backflow testers and full-service landscapers, we can coordinate these applications with your spring irrigation startup or your first major yard cleanup of the year. This approach ensures that your plants are being fed, watered, and regulated all at once.
FAQs
Will Atrimmec harm my plants?
No. When applied by a trained professional at the correct dosage, Atrimmec does not harm the plant. It simply redirects growth from vertical height to horizontal density. It is a common tool used in high-end golf courses and estate gardens to maintain thick, healthy foliage.
How long does one treatment last?
In our local climate, a single application usually provides effective growth control for the entire growing season (roughly 4 to 6 months). Some very aggressive species may benefit from a second light application in mid-summer to maintain a specific shape.
Can it be applied to flowering plants?
Yes, but timing is key. We avoid applying it when the plant is in full bloom to ensure we don't interfere with the current season's flowers. For many shrubs, it actually increases the number of flower buds for the next year by promoting more lateral branches.
Is it safe for pets and children?
Once the spray has dried on the leaves, it is safe for people and pets to be in the area. We always recommend keeping pets indoors during the actual application process as a standard safety precaution.
If trimming has become a constant chore, Atrimmec could be the right addition to your yard care. Contact Preferred Landscape Services today at (503) 782-5900 for a free estimate.
