What can I do to help my gardenia plant flourish?

Here are some how tos https://www.gardeningknowhow.com/ornamental/flowers/gardenia/gardenia-plant.htm

The plant looks big and strong - and too large for the pot it's in! It has become leggy which means I think it may not be getting enough sun. It really should be cut back after it's been accustomed to it's new pot/location (they really like being in the ground!) You can be brutal cutting back gardenias and it will look pretty barren but afterward, you should be getting some great flowers! 😎

"Gardenias in too much shade grow long, spindly stems with weak, thin leaves. They do not form as many flower buds, and the buds may drop off before they open."

https://homeguides.sfgate.com/much-sun-should-give-gardenias-99842.htm l

"Cut away half of the oldest branches at the trunk. Cutting the oldest, thickest branches will allow space for new growth. Depending on how overgrown your gardenia bush is, you might want to trim out more than half of the oldest branches."

https://www.wikihow.com/Prune-a-Gardenia-Bush

Fertilizing: In addition to amending the soil with compost or aged manure, these acid-loving plants will appreciate coffee grounds, tea bags, wood ashes or Epsom salts mixed into the soil as well. Since they are rich in nitrogen, magnesium, and potassium,coffee grounds are oftentimes a more favorable homemade gardenia fertilizer. I use coffee grounds.

https://homeguides.sfgate.com/raise-gardenias-pots-41632.html

Robyn said it all. I can't add a thing - but pick a really spacious, lovely pot to transplant her to.

Banana peels are rich for Gardenia fertilizer.

We put left over juice from pickles around ours and they bloomed like crazy.

. worked well ,

Miracid plant food. My Uncle was a landscape gardner and told me about this

I have one Gardenia and it's growing fine but ants are attacking it every single day! Does anybody knows what can I use to keep them away? I want to use something natural since many birds are around the flower bed. Thank you