Question
i've got a orange tree and this year the fruit not all,20to30% are small golfball size.normal for my tree is about baseball size.note the tree is about 25yrs.of age.

Answer
Hi Ben,

Is your tree growing outside in the ground or inside in a pot? If outdoors, then you should look in the gardening category. Houseplants is for indoor potted plants.

If yours is indoors, then you must provide more information, including tree size, pot size, available light, watering routine, fertilizer schedule and whether anything in your tree's environment has changed in the last year.

~Will Creed