Question
When they say to repot your carnivorous plants in late winter and early spring do they mean anytime between March thru May.And do you have to repot your Sundews and Pitcher plants every year.

Answer
It is often thought that the best time to repot a plant is when it will experience the least amount of transplant shock, the least amount of stall in its growth. With respect to carnivorous plants that experience a winter dormancy, that time is generally considered to be just before or just after they emerge from dormancy.

For Venus Flytraps grown in temperate climates in northern latitudes (north of the Equator) the time they emerge from dormancy varies from roughly late February to late March.

Experienced transplanters can repot at almost any time of the year with minimal disturbance to the plants, although some plants, such as Cephalotus and Drosophyllum, are more sensitive to transplanting regardless of when it is done, so care must be taken with those plants to try to minimize the disturbance to the root system.

There are two main reasons to repot: Because the plants have outgrown the pot through division, simple growth or extensive root development; or when the growing medium breaks down or otherwise becomes less healthy for a plant, perhaps with too high a mineral salt content or anaerobic conditions that would promote destructive fungal or bacterial rot.

Mature Sarracenia quickly grow very extensive root systems and often produce many divisions, so they may need to be repotted for that reason every year or two. For Venus Flytraps, I usually pot three to five plants in one 8 to 10 inch diameter pot, 6 to 8 inches deep, and that is often satisfactory for two years or more before the plants need to be repotted, usually because because of growth and division (baby plantlets formed from the living tissue of the plant, not from seed).

For a variety of great answers to questions such as these, please consider joining an online carnivorous plant forum. Two are suggested below.

FlytrapCare Forum
http://www.FlytrapCare.com/phpBB3/

CPUK Forum
http://www.cpukforum.com/

Best wishes and happy growing!