No advice, but a relative of mine successfully grew a grapefruit tree
indoors. It lived in a living room corner, exposed to South and East
windows. She gave it Miracle Gro according to instructions. The tree became
huge - much like a Ficus benjamina, but nicer leaves. And, it didn't seem to
suffer during the shorter days of winter (Rochester NY).
they need lots of light, reasonable humidity (i spray my key lime tree
almost daily with water), and you should feed them a citrus specific food.
when you get blooms, you'll need to pollinate by hand (or by q-tip), unless
you have a lot of bees inside your house. :-)
my lime tree blooms often, and i get tens of tiny limes that fall off within
a week or so. i currently have my first full sized lime (i've had the tree
for about 9 months), and i'm just waiting for it to ripen. i intend to
celebrate by sacrificing it to the Tequila gods.
i love having the lime tree indoors, it smells heavenly, especially when
it's in bloom. feeding every three months is recommended to increase the
my tree is only about 5" tall, and it's been blooming since i bought it. i
use Whitney Farms "Citrus, Avocado and Vine Food", about every three months.
the box says to fertilize twice a year, but i think that's specific to
outdoor plants. i just sprinkle the food on the surface of the soil, then
mix it in with water using my hands.
good luck with your lime tree!
If you want acidic citrus, like the lemon, there are several
little-known species that will grow outdoors in cold areas. I think
they'll go down to around 10 F (USDA 7). Here's some more info:
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