leaves - Knowledgebase Question

Maricopa, Ar
Question by hosleyd8c
October 10, 2010
we have three ash trees we planted last year about this time. Spring they leafed out, then became infested with aphids. Losing most their folage, what grew back on all three threes are leaves no bigger then 3/4 inch and smaller. Is there something lacking in our soil, not one of these trees have grown at all over the past year. Our pinneapple quava same thing, tiny leaves no growth.


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Answer from NGA
October 10, 2010

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Smaller than normal leaves usually indicates a nutrient deficiency. In your alkaline and clayey soil, it might also mean a need for iron. You can sprinkle some Ironite around the base of your ash trees this fall and in the spring you can feed it with a 5-10-10 general garden fertilizer. This should help counteract the problems with your soil. Ash trees do establish and grow well in the Valley of the Sun but they can take a year or two to settle in and grow well. It's important to water deeply to encourage deep root growth so be sure that when you water you keep the water flowing slowly for an extended period of time. It can also help to dig a watering well or watering basin beneath each tree. Fill the basin, allow to drain, then fill a second time. Watering in this manner will concentrate the moisture directly over the root system and allow it to trickle down, wetting the entire root mass. Water once a week in fall and winter; twice a week in spring and summer.

I'd do the same for the pineapple guava. Hope you see a big improvement in their growth next spring!

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