It is springtime for plants in the greenhouse, including aquatic plants which are adapted to having their roots always damp or entirely submerged in water. Before plants get too far into the new spring season, now is a good time to address the overgrown roots from last season. One option for an overgrown plant is to divided it into two parts; or, the root ball can be cut down to a smaller size; or, more simply, a plant might be moved into a larger pot. Today, I was directed to use all three techniques for some of the aquatic plants. Umbrella sedge Cyperus alternifolius A clean tank and water, with repotted plants at the far end With the plants removed from the tank for repotting, it was an opportunity to replace the murky water in the open tank. But, it is not only the tank water needing to be replaced. The majority of the dirty water sits in a large reservoir below the tank. A pump in the reservoir pushes water up into the tank to find its way back down through drain holes. Over...
A blog account of gardening from a high-rise apartment in a cold climate.