Maraschino cherry sage bush (Salvia greggii Maraschino) is a hybrid of little leaf sage and Gregg’s cherry sage. Growing to a height of 4 feet, it blooms profusely in cherry-red flowers from spring until first frost, attracting butterflies and hummingbirds into the garden. Plant the Maraschino cherry sage in full sun, or partial shade in areas with hot summers. Maraschino cherry sage bushes are hardy to USDA zone 8.
Water the Maraschino cherry sage plant when the top 3 inches of soil are dry. Flood the area surrounding the roots. It is important to allow the soil to dry between watering.
Fertilize the bush in spring with a water-soluble 10-30-10 fertilizer applied at the rate suggested on the packaging. Apply another application in mid-summer, but avoid fertilizing on hot days. Always water after applying fertilizer.
Deadhead the Maraschino cherry sage plant frequently, removing dead flowers. This will encourage the plant to further bloom.
Prune the Maraschino cherry sage plant, using sharp pruning shears, in late winter or early spring. Cut off any dead wood and spent flowers and prune the plant to the desired size and shape.
Trim the plant to 4 inches and pour a 4-inch layer of mulch over it if temperatures under 20 degrees Fahrenheit are expected.
Spray the plant with a garden hose to remove aphids (small green, yellow, brown or black insects). A strong blast of water will knock them off the plant. Use insecticidal soap for large infestations, according to package directions.