Potted Plant Drainage

I have a peace lily that I got when my mother past away so it really means alot to me. I transplanted it from its original pot to a pretty pot, about a 3 gal. container. It does not have drain holes in it though. It did good for awhile then recently not so good. It is always wet but I think it is too wet. Should it have drain holes? I put some osmacote plant fertilizer in it and some natures helper on the top for some fresh soil. Need help please!!!

Peace Lily Spathiphyllum spp.

All plants should be given containers with drainage holes, otherwise, it is very difficult to thoroughly water the plant without over-watering it. Although peace lilies (Spathiphyllum sp.) should be kept moist at all times, the leaves will wilt if the soil is too moist, especially if temperatures are too cold. This is likely the problem with your plant. Night temperatures should not drop lower than 65 degrees F. The leaves will also wilt if the soil is too dry, but they will spring back quickly when watered again.

The peace lily needs low to medium light. At no time should it be placed in direct sunlight, they prefer shade. Flowers are produced in 200 - 300 footcandles of light.

Feed the plant every 3 months or so using a weak solution of houseplant fertilizer, only if it is growing well. Never fertilize an unhealthy houseplant.

The solution to the problem is to remove the plant from its container and repot it in a container which has drainage holes. Give it fresh potting soil which is composed of 2 parts peat moss, 1 part potting soil and 1 part perlite. Keep this mix moist at all times. Remove any rotted roots before repotting the plant. The plant can be divided at this time (at anytime of the year) to propagate new plants. I hope your plant recovers.