Yes, you can use those. They aren't very powerful (for example compared to a couple of four-foot fluorescent tubes) but their shape makes them ideal for lighting small areas with just a few pots. Look for the more powerful ones, 20W-26W are common and you can find up to 42W in the box stores. Remember to use a reflector or surround the area with white card or plastic so that most of the light ends up on the plants and not on the ceiling :)

Thank you Shrubs & bulbs
I was hoping they would work, I would like to grow a small fern under one in my bathroom,since there is no window in there
Thanks again
Debbie

Most ferns are quite happy in low light conditions. Hard to judge by eye though, but even an 11W or 15W bulb might be enough for one plant if you can direct most of the light down onto the plant.