Tree and Shrub Care

What kind of tree and shrub care services are provided by Green Keeper?

Green Keeper provides a wide variety of tree and shrub care services which are explained below.


Green Keeper uses a slow-release, balanced granular fertilizer with a micro-nutrient package. We fertilize 3 times-a-year. (Twice in the spring and once in the fall.)

Chelated iron can be applied to problem plants in the spring and fall for an additional fee.

Olive Tree Fruit Inhibitor

Olive trees in the landscape are generally not considered there for fruit production. However, they do produce fruit, and it drops to produce litter and stained surfaces. Pollen from blossoms is also an allergen.

The solution is to spray the trees in January or February each year and prevent fruit and probably flowers also.

Iron Deficiency (Chlorosis)

Chlorosis is caused, not because there is too little iron in the soil, but because the iron is “bound up” and cannot be accessed by the plant roots. Iron must be applied in a form that the plant/tree can us

Treatment Type:

Iron chelates (Granular)

  • Usually applied after February
  • Slower uptake by the plant

Injection (Mauget)

  • A hole is drilled into the trunk
  • Sap activity moves the Iron directly into the tree/shrub system

Plants more affected by chlorosis:

  • Hibiscus
  • Eucalyptus
  • Bottle Brush
  • Gardenia

Queen Palm Fertilization

These palms have trouble taking up some micronutrients (especially manganese) in our alkaline soils. The symptoms have long been misdiagnosed as a disease, but are related to a lack of manganese.

Green Keeper uses palm fertilizer spikes and sulfur to feed these palms. If your trees are in bad shape, we may have to inject the trees to correct the problem. An evaluation can determine the best approach.

The spikes need moist soil to allow them to be embedded. When prepping for spikes, make sure the moisture goes two feet out from the trunk and more than 6 inches deep.

If you are unhappy with the way your sprinkler system is working (or not working, as the case may be), let Green Keeper Weed Control help!

Call us today to learn more at 480-895-5561.