David from Calexico, Ca writes
The bag really doesn't address on how to apply to established plants. I have Vinca's in my front yard that are starting to yellow. do I apply right to the surface, or do I scratch it in a little?
When using Ironite Lawn and Plant Food Plus 12-10-10 on shrubs, you would use about ¼ pound (½ cup) for shrubs 3-4 feet across, applying uniformly under the shrub, then water it in until the soil is well saturated. You can apply in early spring, summer, and then after flowers have fallen off. If this is more like a flower bed, you would apply 5 lbs per 100 square feet of bed before planting. You would not want to apply this product over the top of sensitive plants like flowers so that you do not damage the blooms. For supplemental feeding, you could use the Ironite Mineral Supplement 1-0-1 instead. You would use 1/3 lb per 100 sq ft, applying evenly under the drip line and around plants. If possible, mix lightly with the soil, then water deeply after application.
Answer last updated on: 07/24/2018
