Q: When you spray plants with liquid fertilizer do the plants absorb it through the leaves or the soil or both?Diana Mendes, email
A: Indeed plants can absorb nutrients through their leaves, but not enough of the major nutrients (nitrogen, phosphorus, potassium) to supply everything the plant needs. Micro-nutrients like calcium, iron, and magnesium can be successfully fed to plants via the foliage. As long as you follow the correct mixing instructions, spraying liquid fertilizer on leaves won't hurt plants, and it may be beneficial in some situations.
Q: Should grasses that only get a few inches high, like blue fescue and carex, be cut back before new spring growth? Would now be a good time?Donna Mendes, email
A: Unlike big grasses, such as pampas grass and maiden grass, the small evergreen grasses and sedges you noted don’t need annual pruning. I would simply wait until warm weather returns and check the plants for frozen tips. if found, it’s easy to clip off the damage and let them grow for summer.