Houston CourtyardMediterranean Landscape, Houston
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Planting notes. Plant gardenias in acidic soil (pH 5 to 6.5) that retains moisture but doesn’t stay soggy. Amend the soil with organic matter such as compost and peat moss, especially if your soil is neutral or alkaline. Choose a spot that gets up to six hours of direct sun. In the hottest summer areas, you may need to provide partial shade or plant them against an east or a north wall. Plant high so that the top of the rootball is even with the ground, but dig a hole that is two to three times as wide as the rootball to allow room for roots to expand. Plant 3 to 8 feet apart, depending on variety; you may need to plant even farther apart if you are planting the tallest varieties. Provide good air circulation. Mulch with pine wood chips, sawdust or ground bark to retain moisture and prevent weeds. Gardenias don’t like their roots disturbed by cultivating around them.