Maintenance fertilizer for pines n spruces

[bigboreblr]

Anybody seen what kinda mix spruce and pine trees should get for fertilizer? I have high 5 pH clay soil I have been liming more or less annually. Wondering if the pH shouldn't be as high as apple trees like them. Planted 2017 seedling, all are around 8-10ft tall.

Most years just put a coffe cup or two of triple 12 or 15 around it This year just used my apple tree mix. 2 parts triple 18 2 parts 6-24-24 1 part 0-0-60 potash. About 2 coffee cups a tree. White spruce and white pines.

 

[Brian662]

I think it's going to be location dependent but you seem to have a food program going. If it ain't broke, don't fix it.

 

[Turkey Creek]

In general conifers prefer a soil that is more acidic than fruit trees.

Fraser Fir	5.5 - 6.0
Concolor fir	6.0 - 6.5
Balsam Fir/Canaan	6.0 - 6.5
Korean fir	5.5 - 6.0
Corkbark fir	6.0 - 6.5
Nordmann fir	5.5 - 6.0
Other fir	5.5 - 6.0
Colorado Blue Spruce	6.0 - 6.5
Black Hills/white	6.0 - 6.5
Scotch Pine	5.5 - 6.0
White Pine	5.5 - 6.0
Douglas fir	6.0 - 6.5