Dividing Bog Plants


For the first few seasons you have your bog plant, the foliage and blossoming is outstanding, possibly even better than you'd hoped. After a few seasons, however, you notice a reduction in flowering and foliage, even though you continue to fertilize regularly. This downturn is your plant's signal to you that it is time for it to be divided and re-potted in fresh soil. If you live in hot regions of the sunbelt, you may need to divide and replant your bog plants annually.

Spring is by far the best time to divide bog plants, though this may be effectively accomplished at any time the plant is actively growing (primarily May-August). Watch the bogs early in the spring as the weather begins to warm, and you may notice new growth from the growth tip of the plant. When these new leaves are visible it is time to divide.


1. Pull the plant container from the pond.
2. Remove the contents of the container and rinse the soil from the root-stock.
3. The plant will have a main growing tip and some juvenile growing tips visible on the large root-stock.
4. Cut off the old root-stock end, leaving 4-6" of healthy root-stock with the main growing tip.
5. Cut off juvenile crowns and discard the woody root-stock end.
6. Re-pot trimmed root-stock and juvenile crowns in individual containers (see Potting Bog Plants under Potting Aquatic Plants).

You can divide your bog plants at any time throughout the growing season up to one month before the first frost is expected (usually around Oct 15th in zone 6, earlier in lower zones, later in higher ones). You should allow 2-4 weeks for your bogs to adapt to their new surroundings after transplanting or dividing and re-potting. Do not expect blooms for the first 4-6 weeks after transplanting. After this period, you can expect another 1-3 years of amazing blossoms and foliage before the cycle must be repeated. By using Larger Containers you can often extend the period between re-pottings.