Answer: Your gardenia won't be very happy if you plant it in clayey soil. You can either amend the soil prior to planting with some organic matter to help it drain well, or you can keep your gardenia in a pot. If you decide to plant it in the ground, spread 4-5" of organic matter (compost, aged-manure, etc.) over the planting bed and work it in to a depth of 8-10". Plant your gardenia, then mulch over the soil surface with additional organic matter.
Best wishes with your new gardenia!
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