Grow native aquatic plants by sowing seeds or transplanting vegetation from a donor site. For a list of suitable species, see Aquatic Plants.
Plant from seed
- In late summer or early autumn, collect ripe seeds and flowers from many plants over a large area, taking no more than 10 per cent of a crop.
- Dry flowers for a day or two by spreading them out on newspapers. Then separate seeds from floral parts.
- Place cleaned seeds in sealable containers that will keep them moist. Store in a refrigerator at about 3 C for several months.
- Choose a planting location with soil and water conditions similar to those of the harvest site.
- In early summer, after water levels have fallen, sow seeds onto the soil of a littoral zone. Cover cat-tail, arrowhead, sedge, blue flag, swamp milkweed, and water plantain seeds with a thin layer of soil. Bulrush, alder, and water willow seeds need only be sown on the surface.
- Collect small portions of common plants from sites with conditions similar to your own.
- Use a shovel to remove plants in clumps with a few stems and soil surrounding their roots. Do not uproot entire bunches.
- Keep plants damp in a bucket and transplant them to the new site as soon as possible.
- Dig holes with a shovel or by pounding a stake into sediment.
- Push roots about 5 cm below the surface, firmly packing soil around them
- Roots must be securely anchored. If necessary, hold each clump down with a forked dead branch.