Diana from Los Angeles, California writes
Miracle Grow Garden Pro Bloom Booster is a great product to ehlp Gerniums needing potassium. We also have a product called Hi Yield Muriate of Potash which contains 0-0-60. The only downfall it is labeled for plants which develop below ground such as dahlias, gladiolas, potatoes, carrots, onions, etc. You may also want to consult your Local Master Gardener for advice on a product that will fit your specific needs.
Answer last updated on: 08/11/2013