I have a hillside that is at about a 45 degree slope where I have planted about 200 junipers.
The base soil is Alabama clay. I water about once a week.
I hired someone to do the planting, the top of the root ball is exposed at ground level. They have been in the ground about 8 months.
About 10 are dying in my opinion, several have light brown needles over most the sprig with only a little green left on the tip. Others are dark brown with no green, expect these are dead.
I checked for spider mites and sprayed Bifren, spider mite indication was gone but they still don't look healthy. I'm not an expert on plants, they look dead to me but was told they could be in hybernation?
Can I over treat with Bifren, have been applying 1/2 ounce per gallon but haven't used lately. The last time I checked for spider mites I got no indication they were present.
I was told to apply a handful of 13-13-13 to each plant in the center of the exposed root ball and to water thoroughly - I don't want to burn the plants so is this a good idea or is their a better fertilizer - timed release for example. How often should one fertilize?
Anyone have similar issues, I was told these are maintenance free plants but I am starting to wonder.
Thanks in advance