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Frequently Asked Questions

My Property  |  Arborists and Landscapers  |  Utilities

My Property

What is Profile 2SC?

Profile 2SC is a specially designed compound called a tree-growth regulator (TGR) that, when applied to a tree, controls growth in the tree's crown (branches). A treated tree grows more slowly, requires less pruning and may be able to re-allocate precious resources to root, storage and defensive systems.

Are TGRs new?

No. The nursery and florist industries have used growth regulators since the 1960s to produce more compact and attractive ornamental plants. Today, many flowers, shrubs, golf courses and orchard trees receive growth regulator treatments.

Why use Profile 2SC instead of just trimming the tree?

Managing trees can require frequent and costly trimming which, when a tree is in a hazardous location such as under power lines, can be dangerous. Trimming usually takes place less often and with reduced biomass removed from the tree with the use of a TGR.

Will using Profile 2SC replace trimming?

No. It will help better manage trees by reducing the number of times a tree is trimmed or the amount of trimming the tree undergoes. It's important to note that Profile 2SC doesn't stop growth in treated trees. It slows growth, allowing for reduced trimming and a longer interval between trimmings.

Will Profile 2SC affect the way my tree looks?

A treated tree may look darker and healthier, since resources are allocated away from growth and into defense, enhanced root systems and increased production of chlorophyll. You may notice more dense, darker-green leaves. You may also notice shorter "internodes," or the distances between where leaves attach to a branch. These effects vary with environmental conditions and tree species.

Do treated trees need special care?

Besides reducing growth, Profile 2SC does not materially affect the other processes of the tree. Treated trees require no special care. In fact, research indicates they may hold up better under stress due to heat, water, pollution, insects or disease than untreated trees.

How long will the Profile 2SC stay in the tree?

A treated tree may be effectively regulated from two to eight years. Tree species, environmental conditions, type of trimming, application rates and application timing influence the length of control.

Can I burn the leaves or wood from a treated tree?

Burning the trace amounts of Profile 2SC found in leaves or wood of a treated tree breaks the compound down into harmless elements. There is no need to avoid these activities.

Can I still use the tree's leaves as mulch or as cover in my garden?

The leaves of treated trees can be used as mulch around trees, shrubs, flower beds and gardens.

Will Profile 2SC cause stress in trees?

Profile 2SC offers advantages over trimming alone. Each new trimming places a tree under stress because it removes leaves and branches, which store nutrients. This forces the tree to tap its reserves to grow new wood. Profile 2SC, on the other hand, controls regrowth and may allows the tree to use its reserves to survive disease and insect attacks and to withstand environmental assaults like drought, heat and pollution. Therefore, Profile 2SC may reduce tree stress and leave a tree with a greater ability to survive in harmful conditions.

How is Profile 2SC applied?

Profile 2SC is equally effective when applied as a basal soil drench or by soil injection. In the near future, new tree microinjection technology currently under development by SePRO will be a third option.

Basal Drench

Basal drench, also called soil drench, does not require any specialized equipment. A trench is dug completely around the base of the tree at the point of contact between the soil and the tree trunk, approximately 2 to 3 inches deep and 3 to 4 inches wide. The recommended dosage of Profile 2SC is uniformly poured around the base of the tree onto the tree trunk/soil interface and allowed to run down the interface until it is absorbed into the soil. After the product is fully absorbed, the excavated soil is returned to the trench.

Soil Injection

Soil injection is a quick, easy and popular application method for Profile 2SC when treating a large number of trees. A skilled applicator can treat 2 to 3 times the number of trees using soil injection versus a basal drench application. With soil injection, Profile 2SC is injected into the soil 6 inches below the soil surface uniformly around the tree within 8 inches of the base of the tree. Soil injection of Profile 2SC requires specialized injection equipment that has been designed and tested to deliver the solution properly.

Tree Microinjection

Tree microinjection will offer the ability to treat trees where soil application is not practical. Although currently under development, recent advancements in technology have led to significant improvements in this application method verses previous tree injector and implant options. The new system combines advances in chemistry development with a highly portable, convenient, all-in-one unit that delivers ultra low dose applications without the need to drill holes.

What determines which application method is used?

Environmental conditions, location limitations, equipment availability and personal preference will determine the application method. Other factors such as root matting, compacted soil and thick grass or weeds may make one method more practical than another.

Soil injection places Profile 2SC close to the roots, prevents runoff and aids in dispersing the product. Basal drench is a very effective and good choice when using soil injection equipment becomes impractical. One application method offers no major advantage over the other although more trees can be treated per day using soil injection.

Who can apply Profile 2SC?

An experienced tree professional is required to apply Profile 2SC. Please contact a SePRO representative to find a trained applicator in your area.

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Arborists and Landscapers

Does Profile 2SC work best in a certain region of the country or on a certain tree species?

Profile Jug
Field trials show that the efficacy of Profile 2SC does not vary greatly with geographical location. Soil type, tree species, application rates and application timing do influence efficacy, however. For a list of tree species and application rates, please consult label instructions for Profile 2SC. You can also contact a SePRO Corporation representative for localized rate cards. You may treat trees not expressively prohibited by the label. Just follow the instructions and application rates for a similar species.

Is there a specific time of year when I should use Profile 2SC?

Applications can be made throughout the year, weather permitting, except when the soil is frozen or saturated with water. However, Profile 2SC will be primarily absorbed by a tree's roots and travel to the crown during periods of active growth. Most trees complete a majority of their growth six to eight weeks after leaf formation. Note: Profile 2SC is absorbed by plant roots and translocated to the growing tissues in response to evaporative water loss (transpiration). If applications are made after fall leaf drop, little uptake of Profile 2SC will occur until development of new leaves in the spring and resumption of evaporative water loss.

How do different soil types and pH influence the efficacy of Profile 2SC?

Heavy clay soils, acidic soils with a pH less than 4.0 and soils with heavy organic matter are more binding and will lead to slower uptake. These soils shorten the length of time growth reduction occurs and require higher application rates. Sandy soils, on the other hand, allow for quick uptake of Profile 2SC into the tree and will increase the length of time growth reduction occurs. Lower application rates may be necessary with sandy soils. Finally, soil type can affect treatment method selection as well. For example, compacted soils that make digging difficult may require soil injection in lieu of basal drench. Visit the Application page for more information.

When is the best time to trim trees treated with Profile 2SC?

Trees may not exhibit visual regulation signs for up to one growing season after treatment. This gives you the flexibility to treat and trim or trim and treat during the same season or following season. When making trimming decisions, keep the following two factors in mind:
  • Efficacy - When timing treatments for best efficacy, you should trim the trees one to three months following application during the growing season. This allows the existing leaves time to pull the growth regulator to the crown during periods of active transpiration before you trim, thus reducing the resurgent growth. However, you should not consider all growth bad. Some growth is helpful in reducing sun scald on susceptible species.
  • Aesthetics - Of course, you want the trees to look visually pleasing. When timing treatments for aesthetics, trim and treat at approximately the same time. This scenario removes foliage necessary to pull the product to the growing points. So, regrowth is initially not inhibited, allowing the tree normal growth before regulation engages.
Are there limitations on the size of tree I can treat with Profile 2SC tree growth regulator?

Tree species, diameter and crown size figure into the decision of whether a tree should be treated. Generally, only healthy trees with trunks measuring at least 4 inches diameter-at-breast-height (dbh) are good candidates. You can also treat smaller trees not yet in the wire zone and trees on fence rows. Do not apply Profile 2SC to trees in poor overall condition.

Will I get escape branches on a tree regulated with Profile 2SC?

When Profile 2SC is properly applied, the product is distributed throughout the tree crown, making the likelihood of escape branches lower than in an untreated tree. However, some trees may have damaged xylem tissue from storms or mechanical injury which could result in some escape branches. The number is quite small compared to the pruning required on untreated trees.

How long will Profile 2SC regulate a tree?

Field trials, research and case histories indicate that regulation effects of Profile 2SC can last from two to eight years. This timeframe depends on a number of environmental factors, including climate, application dose, tree species, application timing, tree health and soil conditions. The need to regulate a tree's growth and aesthetics will also play a part in frequency of treatment. As a general rule, it's time to re-treat once it's apparent that normal growth has resumed.

Can I over-regulate a tree with Profile 2SC?

It's unlikely you can over-regulate a tree if you follow label instructions. In historical cases of accidental overdose with trunk-injected TGRs, trees exhibited signs of severe regulation. They usually resumed normal growth processes in time, with little indication of permanent adverse effects. Because of the mode-of-action of Profile 2SC, it's unlikely for it to negatively affect a tree. In fact, research shows that TGRs may help trees cope during periods of stress from drought, insects, pollution, disease or extreme temperatures.

Can Profile 2SC affect vegetation surrounding a treated tree?

Note that application of Profile 2SC may result in localized, temporary discoloration of turfgrass immediately adjacent to the treatment site. In addition, shrubs and flowers directly in contact with treated soil usually exhibit signs of regulation. These are natural responses of the vegetation and can be significant if their roots extend into the treatment zone.

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Should I treat every tree on my system?

You may see the most immediate benefits from Profile 2SC on fast-growing trees that are costly to prune. Profile 2SC is also ideal to control the "hot spots" or "cycle busters" along power lines and in locations where minimal intrusion on owners' property is desired. There also may be areas-like a circuit feeding a hospital-where reliability is of utmost importance. Another excellent candidate for Profile 2SC is a tree that has never been trimmed but will reach the wire zone in the next few years. This tree can be regulated in its natural state.

Will I need special crews or training to apply Profile 2SC?

Application procedures for Profile 2SC have been simplified but require accurate tree identification and measurement and precise dose determination. Proper application of Profile 2SC will ensure even distribution and uptake in the treated tree. Without these basic skills, Profile 2SC may be improperly applied, resulting in little or no response or over-regulated trees that may develop small leaves and exhibit little or no growth. For this reason, SePRO Corporation has a training program for utility crews as well as an instructional video/DVD currently under development. Contact a SePRO representative for more information.

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