If you guessed Iron deficiency you are right. The tell-tell sign in iron deficiencies is the leaf veins remain green while the leaf tissues between the veins are yellow. Iron deficiencies mostly shows up in the newer growth of the plant. Iron deficiencies are found in alkaline soils, and is tied up and not available to be absorbed via the roots. Iron is necessary for the formation of chlorophyll, which acts as a catalyst for plant respiration and photosynthesis. Without iron, carbohydrates (sugars) which are manurfactured by photosynthesis, would cause the health of the plant to decline. Don’t be discouraged, there are some ways to fix the situation; 1) As a quick fix, you can use foliar sprays and apply directly to plant tissues, however, it is not a long term solution. 2). Using chelated iron (either in powder, granular or liquid form) is the best and longest solution to the problem. Apply all iron fertilizers around the plants natural “drip” zone (natural, meaning before a severe pruning). A word of caution; don’t allow any of these forms of iron to come in contact with sidewalks, patios, bricks, pavers or driveways as it stains and is very difficult if not impossible to remove. As always, read all instructions before applying any fertilizers. Join us at www.projectgreenscaping.com next week, where we will compare the differences in nitrogen and iron deficiencies, which often get confused and such conditions are improperly diagnoised.
Photo credit: Mike Brown