If the leaves on your trees are unexpectedly going yellow, there could be several potential causes. If you’ve ruled out insect attacks, disease, and overwatering, the trees could be suffering from a deficiency known as iron chlorosis. Below, learn more about this problem and the most common questions tree service professionals hear.

Iron Chlorosis FAQ

What causes this issue?

If the iron content of your soil is too low, trees won’t be able to produce enough chlorophyll, leading to reduced photosynthesis. That’s because iron is vital for the initial stages of chlorophyll production. A tree that doesn’t have enough of this substance will struggle to convert sunlight to energy, slowing growth and potentially leading to other more visible problems.

What symptoms do trees show?

Chlorophyll is the source of the green color in leaves, so underproduction leads to leaves that look pale green or yellow. In extreme cases, the leaves may appear pale white with yellow veins. To determine if iron deficiency is the root cause, have your soil tested—high pH soil likely means iron chlorosis is the culprit.

How can you prevent this problem?

The best way to prevent this issue is by selecting tree species that aren’t as susceptible to iron deficiencies. For species that are prone to iron chlorosis, such as fruit trees, avoid overwatering and ensure the plant site has adequate drainage. A tree service professional can also advise you on the best location for new saplings.

Can affected trees be treated?

Even with preventative steps, iron chlorosis might set in. In some cases, the tree may be young or old enough that saving it isn’t worthwhile. For trees that you want to preserve, several treatment methods are available. Iron chelates or sulfur and iron sulfate can be applied to the soil, iron-infused liquids can be sprayed on the leaves, or the tree can be directly injected via a hole bored in the trunk.

If you need a tree service company that can diagnose and treat your trees that are affected by disease, pests, or iron chlorosis, contact the professionals at Rivertown Tree Service. Based in Hastings, MN, their offerings include tree trimming, storm cleanup, stump removal, and land clearing. To learn more about their services, visit their website and call (651) 438-3704 to schedule service.