My gardenia has wilt -Help! - Knowledgebase Question

Santa Monica, CA
Question by carmena5
January 21, 2006
Help! Last year I bought a beautiful gardenia and transplanted it into a large clay pot with drainage holes, in 100% peat moss (this had been advised as OK by the nursery where I bought it). During the winter, there was some heavy rain and the plant showed signs of wilt soon after. After hoping it would dry out a little, I depotted the plant to look for rotting roots but these appeared to be fine - nothing mushy. I then repotted it and watered it with some plant starter to reduce the shock of depotting it. It's now looking very wilted, almost dead! Was I too late? Is 100% peat moss too heavy a medium to grow it in? What can I do to save it? Are there any tips on container planting gardenias that I should remember next time?
Any advise would be appreciated!

Answer from NGA
January 21, 2006


Gardenias like an acidic soil and peat moss is certainly acidic, but I don't think it's the proper growing medium for your gardenia. Peat moss is fine when mixed with potting soil or with garden soil to help lower the pH (acidify it), but peat holds too much water and once it dries out, it's difficult to rewet. Regular potting soil has peat moss in it, but it also has larger particles (usually cedar bark and chips) and it has either vermiculite or perlite, which help lighten the mix and keep it aerated.

I would repot the gardenia once again in a good grade of commercial potting soil (Miracle Gro, or Sunshine Mix) and water it well to help settle the soil. After two or three weeks, try pruning your gardenia back to encourage healthy new growth. When new growth appears, begin fertilizing your plant. Since it's in a container you'll want to be careful not to over-fertilize and burn the roots. You can feed it every 2-3 weeks with a half-strength dilution of liquid fertilizer (Miracle Gro or Peter's 20-20-20). Feeding in this manner will ensure the roots have a constant source of nutrients without the concern of burning the roots.

Hope your gardenia regains its health soon!

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