All I know is its an "Aimee" gardenia. It didn't say if it was grafted or not, so I assumed its not, and kept it in the pot.

I've given it some Osmocote, and every once in a while (2 -3) I've given it some diluted liquid fertilizer.

No insects. My yard frequently has scale and thrips(for the first time this winter) but I've checked frequently and seen almost no sign of them.

One leaf (in the bottom center of the picture) did get sooty mold on it, but I've looked over and over, and never found any sucking insects.

I have the Miami Supreme in the ground and about twice a year I put a granular acid fertilizer for azaleas or roses. Rarely if I see a problem with bugs I use the rose systemic. In summer they get watered twice a week from the sprinkles. Started to flower this morning, love the scent.

Silvia

Perhaps it needs a little iron. Gardenias like iron. Maybe take some rusty nails and gently insert them in the soil around the gardenia.

Give it your coffee grounds if you drink coffee.

Mine does that & when I give it some organic fertilizer, it greens up. Mine is very, very old (maybe 40 yrs) & in the ground, however.

I've been thinking about using an acid fertilizer like Silvia, but keep procrastinating = J

Neither coffee grounds or rusty nails will improve iron availability.......that is a factor of pH (and neither will have any significant impact on pH). Gardenias need an acidic soil to properly access nutrients to keep them healthy. Using a fertilizer formulated for acid loving plants will help (MirAcid or Miracle Gro for Acid Lovers). Or for an immediate boost and better coloring, try a liquid chelated iron product according to label directions.

And if you have treated water or water that tends to be alkaline, use table vinegar diluted in a watering can to irrigate the container. That will help to maintain adequate acidity.

Rusty Nail myth.

I wasn't suggesting coffee for iron, but I can say that my neighbor's gardenia seems to like coffee grounds very much, I presume for the acidity.

Ok so I've got to use what I have... going to try some Miracle Gro for acid- loving plants, or maybe some vinegar. I do t have sulfur, and don't really want a bag of it for one plant. Thanks everyone, this helped a lot!

Put it in the ground.

Jane