The "Crush" in its name comes from its intense colors, which you can manipulate by adjusting your soil's pH:
: Apply a slow-release, high-phosphorus "bloom boost" fertilizer (like Flower-tone ) twice a year: once in early spring and again in June or July. Avoid high-nitrogen fertilizers, which encourage foliage growth at the expense of flowers. Summer Crush
: Achieved in acidic soil (pH below 6.0). To reach these tones, use a soil acidifier like aluminum sulfate or elemental sulfur. 3. Routine Care & Maintenance The "Crush" in its name comes from its