Andrea from Phoenix writes
Yes, you may spray around Magnolia trees with Roundup QuikPRO as long as you do not spray the Magnolia trees directly and try your best to prevent any over-spray from getting on the Magnolia trees. Roundup QuikPRO does not leach in the soil and should not hard your Magnolia trees as long as care is taken and the trees are not stressed.
Answer last updated on: 11/11/2014