Q. I have a peace plant and it is full and green. The plant is getting a bloom, but the ends of the leaves turn brown. What do I need to do? -- M. G. of O'Fallon A. The peace plant (lily), Spathiphyllum wallisii, has a problem in winter with the edges of its leaves turning brown if air humidity is too low.

The air in the house tends to dry out because of the furnace drying the air and lowering the amount of water vapor it contains. The leaves of the peace lily are very thin, especially at the edges, and are on the extreme end from the roots. The roots cannot supply enough moisture to the leaf tissue, turning them brown.

You need to place the plant on a tray covered with a layer of inert rock, such as lava rock or pea gravel. The tray needs to be about two inches deep and made of waterproof material. The rock needs to be about an inch deep. Add water to the tray and never let the bottom completely dry, but do not cover the stone layer completely.

If the water is above the rock layer the plant's roots might be able to absorb too much water and drown the roots. As water starts to move up a little on the sides of the stones, it will evaporate and increase the humidity around the leaves.

Another consideration is to slow the fertilizing of this plant in late summer to slow the growth of leaves and prevent them from growing too quickly and becoming thin.

Make sure that you don't put this plant in direct sunlight in winter because this will also dry the air and leaves.

Other plants with thin edges can also be put on this tray, such as palms.

Q. I have containers of forced bulbs. One is a hyacinth and the other contains paperwhite daffodils. They are just about finished blooming. Can I replant them again for more blooms?

-- F. G. of Belleville.

A. The paperwhite daffodils are a one-time use. As soon as they finish blooming, you can discard them because it is almost impossible to get them to rebloom.

The hyacinth can be replanted outside. Do not cut anything off of the leaves or stems, just the spent flowers. The first thing that bulbs -- such as tulips, regular daffodils and hyacinths -- need after being forced it to recuperate if they are growing in a regular soil mix. If your hyacinth is growing in a small container of water, then it cannot be forced to bloom again unless you repot it in soil covering the bulb and about one inch of the stem.

These bulbs need to continue growing because this is the only way to build up energy for production next year. You will need to keep them growing until you can safely plant them outside. You can feed them once with houseplant fertilizer diluted to one-half the recommended application. When the soil has dried out enough in spring, you can plant them at their new permanent location. It may take more than a year for them to produce a flower, so be patient.