tree fertlizer

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frodo

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is there a general fertilizer for established mature deciduous trees. i am in zone 6 if that matters.
 
What time of year and what kind of tree?

Also you should have the soil tested before putting down any fert. Jst to see what is already there.
 
what would happen if you fertlized lightly like you do a tomato plant

You would be throwing good money away. What happens if you oil has barely any N but is out of control on P? and then you dump a typical fall fert on it of say 8-14-14? You run the risk of burning it up with P.

Get the soil test done. Same as your lawn, dont just throw chemicals on it because Scotts tells you its good.

Skip the fall fert for now and get the soil samples out. Then do a spring time fert. AFTER the new growth hardens off. Like late may early June.
 
$63 'round here for the full analysis which includes soil structure and cation exchange capacity.

$4 for standard pH test

these prices are from from Umass
 
Last edited:
. What happens if you oil has barely any N but is out of control on P? and then you dump a typical fall fert on it of say 8-14-14? You run the risk of burning it up with P.

one more question, not trying to be a pest. if the n or p was way out of whack would the specimen be vigorous and healthy
 
. What happens if you oil has barely any N but is out of control on P? and then you dump a typical fall fert on it of say 8-14-14? You run the risk of burning it up with P.

one more question, not trying to be a pest. if the n or p was way out of whack would the specimen be vigorous and healthy


it is a distinct possibility
 
. What happens if you oil has barely any N but is out of control on P? and then you dump a typical fall fert on it of say 8-14-14? You run the risk of burning it up with P.

one more question, not trying to be a pest. if the n or p was way out of whack would the specimen be vigorous and healthy

Sure plants, especially trees, are very good at adapting to their surroundings. But throwing more on their doesnt mean it will do even better. Look into some organic BIO based ferts, and was to feed the Fungi/bacteria populations. Myccorhzae are unbelievably good for ANY tree, shrub, lawn, flower, etc etc. You likely have a small population already but should introduce more.
With a high population they will generate 2-3 pounds of N a year for you! And improve water absortion abaility by 1,000%!!!!!

Generally the best way to fert a tree is with liquid deep root. It gets down into the primary root zone, and is in liquid for so the tree can instantly use those nutrients.
 

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