Ask a Question forum: Hyndrageas.

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Apr 25, 2017 8:55 PM CST
I live in St. Louis mo area. I have three hydrangeas bushes facing east. Should I fertilize? Soil is half acid half acid.

I have a small lemon tree I just broke ugh to outside. I fertilized two wk ago while it was indoors.
Any specific info I should have? It is east exposue
Name: Sue
Ontario, Canada (Zone 4a)
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Apr 26, 2017 6:20 AM CST

You don't need to fertilize shrubs in a garden very much, typically. Do you know what kind of hydrangea they are?

I don't know what you mean by the soil being "half acid half acid". Do you have a number on the pH scale? Are they the kind of hydrangea that is blue or pink depending on soil acidity?

I'll leave the lemon question for someone else who grows them, but is it staying in a pot outdoors?
Name: Elaine
Sarasota, Fl
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Apr 26, 2017 10:01 AM CST
On your little lemon, you should transition it to full sun gradually. It will love all the sun you can give it, that far north. But you must be sure to water it enough that it never completely dries out. Citrus have most of their feeder roots near the soil surface so they are prone to drying and certainly don't like any weeds or other plants growing in their root zone. You might want to place some wood chip mulch on the soil surface to keep it cooler and more moist in the summer months. A light colored pot will also help to keep the roots cooler - you can just slip the present pot into a larger one if it's in a dark color right now.

Are you using a fertilizer that is specific to Citrus? They have micro-nutrient requirements that most regular fert doesn't fulfil. Another application of fert in a couple of months, and again in August is what is recommended for citrus here. But growing in a pot, be careful not to apply too much at each application - maybe half as much as the directions say. (since the roots are confined to a pot, and the fert can't wash away as easily as if it were in ground)

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Name: Bob
Vernon N.J. (Zone 6a)
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Apr 26, 2017 7:38 PM CST
Fertilize the Hydrangea with a slow release high phosphorus fertilizer at the drip line in the Spring for more blooms.

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