: 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.
: Achieved in alkaline or neutral soil (pH 6.0 and above). Add garden lime to raise the pH if your soil is too acidic. Summer Crush
: Plant roughly 3–4 feet apart if creating a hedge or group. : Apply a slow-release
The "Crush" in its name comes from its intense colors, which you can manipulate by adjusting your soil's pH: Summer Crush