Tree and Plant Fertilization
Photos courtesy of Larry Costello PhD - University of California
Nutritional deficiencies of these elements in trees and shrubs cause various symptoms:
Nitrogen: Deficiency of this element causes slow growth, diminished leaf size or number of leaflets, and resulting in pale green leaves.
Phosphorous: This deficiency causes abnormal reddish purple pigment on the petioles or interveinal areas of broadleaved species. These symptoms sometimes develop without noticeable change in foliar density or leaf size on established plants.
Potassium: Deficiency of potassium causes slow growth, browning of tip margins and interval areas of the leaves, and shoot dieback. It also increases sensitivity to freezing and allows susceptibility to various diseases.
Frequency of fertilizer application depends on several factors such as the type of soil, time of year, or type of tree or shrub. Testing the soil pH level is important for effective fertilization applications. If the soil is too alkaline, iron solubility is reduced and then becomes unavailable to the tree.
Excess fertilization can be a problem as well. It can injure trees and reduce tolerance to certain stress problems. Arborwell uses a 50% organic fertilizer which is safe for humans, pets, and the environment.
To speak with an Arborwell Wellness Specialist, please call 888-969-8733.
Our team of certified arborists are ready to help with all your arboricultural needs.
| Anthracnose | Aphids | Armillaria Root Rot | Bark Beetles | Tree and Plant Fertilization | Fireblight | Insect and Disease Management | Mycorrhizae Fungi Treatments | Oak Tree Care | Oak Worm | Fusarium Wilt - Palm Tree Care | Pitch Canker Disease | Powdery Mildew Disease | Scale Infestation | Tussock Moths |