A fertalizer question

debstuart1(z4NH)June 7, 2012

I have some "spikes" for evergreen trees which are still in their wrapped box - I've had them forever but I assume they are still OK - I would like to know if I can crumble them up and use them on the surface for my rhodies and azaleas? Or should I go and buy something specifically for them? The spikes are 16-4-4

thanks for advice!

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rhodyman(SE PA, USDA Z6)

No. Don't use them on rhodies.

Rhodies don't need much fertilizer and a strong chemical nitrogen fertilizer can set them back. The ideal fertilizer is something like HollyTone used around bloom time at half the rate on the package and only once per year. It has organic nitrogen which doesn't kill the mycorrhizae in the soil like strong chemical nitrogen fertilizers do.

Here is a link that might be useful: fertilizing

    Bookmark   June 7, 2012 at 11:43AM
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botann(z8 SEof Seattle)

I agree, don't use it on your rhodies and azaleas, ground up or otherwise.
Grind them up and use it on your lawn.
Fertilizer spikes are the worst way to apply fertilizer to any plant, including trees, in my opinion. However, ground up, they're just like any fertilizer with the same ingredient numbers.

    Bookmark   June 20, 2012 at 12:13PM
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