Baja_Costero said: 1 tbsp per gallon of 24:8:16 works out to be over 1000 ppm N in the final solution. Here is a handy calculator to use with any product and arrive at a working concentration.
For comparison, the dosage I give my cacti and succulents (same MG granular product) is less than 1/20th (5% of) this amount. I can't really imagine any situation where more than 200 ppm N would be needed on a regular basis, especially when there is organic matter (compost) in the soil.
Roses are not cacti.
Roses are known as heavy feeders, even if the soil they are in is considered "good" soil.
More is better, on a whole.
Too much Nitrogen gives you a very green bushy plant that does not blossom as much as it should but too little Nitrogen gives one yellow leaves and a less healthy plant.
I generally feed my roses with 5 gallon pails in which I add as much fertilizer as decades has given me a feel for.
I always douse my roses but then I normally also add bio-fungicide to the watering pail.
For new roses I am a bit more precise about what I do, using rooting fertilizer
All that said, this is a new rose, and it would be better to get a phosphorous rather than a Nitrogen heavy fertilizer until the rose has grown six inches plus or minus.
I ALWAYS add chelated Iron when I plant or fertilize.
https://heirloomroses.com/blog...
Roses are heavy feeders. A healthy, well-fed rose will produce more blooms and be better equipped to ward off disease and illness.
