Gardeners living in USDA Plant Hardiness Zones 9 through 11 have the option of adding the tropical red ginger plant to their landscape. This tropical perennial grows prolifically in moist, organic soil. In the proper growing environment and with attentive care, red ginger plants may grow 15 feet tall with red blossoms shooting up majestically amid the plant foliage. Plant red ginger in a partly sunny growing spot for a splash of distinctive color.
Prepare the growing area for the red ginger plants. Till the soil with the garden spade down to a depth of at least 6 inches. Add 3 to 4 inches of aged compost to the top of the soil and work this in with the garden spade. Rake the soil surface smooth and even with the rake.
Dig planting holes for the red ginger rhizomes with the trowel. Dig the holes approximately 1 foot apart and deep enough so the rhizomes can be covered with 2 inches of soil.
Place the red ginger rhizomes into prepared holes with the rhizomes lying on their sides. If you see any shoots emerging from the rhizomes, face these up in the holes. Cover the rhizomes with 2 inches of soil and firm the soil down gently with your hands.
Water the newly planted red ginger rhizomes generously immediately after planting. Keep the soil evenly moist at all times. Red ginger plants need at least 1 inch of water each week.
Fertilize red ginger plants once per month while they are actively growing. Mix water-soluble fertilizer according to package recommendations for the size of your plants or growing area. Pour the fertilizer carefully around the base of the plants. Do not splash fertilizer onto the foliage or you risk burning the plant.
Prune the red ginger plants to remove the spent flowers when they fade. Use the pruning shears to cut the entire flower shoots off just above the crown. Cut away any leaves or foliage that turn yellow or brown and discard this foliage.