I planted my 4 ft. Trachy f. just 2 weeks ago with Miracle Gro potting soil .14-.14-.14, watering it in everyday (8 Litres approx.). Last night we had our first big rainfall in about a month. Today I applied a 30-10-10 soluable fertilizer . was it too early to fertilize after planting? How long after planting is a tree considered 'established'? I hope I didn't damage it...I should have asked first!
(Oh and I'd like to use Miracle Gro slow release 24-8-16 during the growing season - is that alright?)

Thanks
Heidi