why are the leaves on my gardenia plant turning yellow?
Answers:
Gardenias often have yellowing of older leaves in late winter and spring. This is usually a sign that the plant is moving its magnesium to the new growth. In the beginning of spring feed with Epsom Salts (Magnesium sulphate) will usually solve this problem. To avoid getting other nutrients out of balance, only apply Epsom Salts no more than once a year.
Gardenia plants that are healthy will grow vigorously and are less likely to be affected by fungus problems. Planted in an ideal position, kept mulch and well fertilised regularly, will help most gardenias to stay robust. Always keep a close examination of the plants and deal with problems as soon as they materialize.
Other answers:
Not enough water. When you water do it so water runs out the bottom. the plant always beed to be kept moist and is usually unforgiving if left dry. If it's outside, put it in the shade. And finally, use a Acid fertilizer when you water once a month. Miracle Grow carries one called "MirAcid."
Not enough water. When you water do it so water runs out the bottom. the plant always beed to be kept moist and is usually unforgiving if left dry. If it's outside, put it in the shade. And finally, use a Acid fertilizer when you water once a month. Miracle Grow carries one called "MirAcid."
I have found that using old coffee grounds under the plant works real well, I also use them on azelas. Good luck.
if turning yellow along the ribs, try using a fertilizer with chelated iron. i had the same problem and this took care of it in no time