potassium

How to Fortify Your Roses Against the Cold

– Posted in: Roses

Jack Falker is a rose enthusiast who gardens in Minnesota. Minnesota--in case you don't have the USDA Hardiness Map memorized--is entirely a cold climate state, consisting of Zone 3 and 4. (Okay, there is a teeny bit of Zone 5 in the most recent map, but still.) One can't grow roses in Minnesota without knowing [...]