This winter was pretty cold compared to the past five years or so in southern New England. We walked on the pond a few times in January and February and I'd say the ice was at least eight inches thick for much of that time. I knew I'd have a lot of attrition with the plants I added to the pond in mid November. Here's a summary of what I've planted so far and how it's done:
Placed in small sized plastic bags with soil mixture and two fertilizer pellets, surrounded by pea gravel, and enclosed in fabric planting bags before submerging one to two feet below water level:
- Nymphaea odorata (White Water Lily) qty 20. About 50% survival rate, slow to emerge but many of them seem happy and are coming along nicely.
Bareroot live plants, individually wrapped in burlap without soil and weighted with pea gravel, and carefully placed in the marginal zones from 2" to 6" deep:
- Onoclea sensibilis (Sensitive Fern) qty 20. About 50% survival rate so far
- Lobelia cardinalis (Cardinal Flower) qty 8. Does not like to be fully submerged. Leafy parts need to be above water level. About 50% survival rate so far
- Iris versicolor (Northern Blue Flag) qty 30. Doing great! About 90% still alive and growing nicely
- Scirpus validus (Softstem Bullrush) qty 10. Only about 20% survived over winter, but those that did are thriving
- Pontederia cordata (Pickerel Rush) qty 20. Only about 20% survived over winter, but those that did are thriving
- Caltha palustris (Marsh Marigold - 3" Pot), qty 8. These are doing great! All 8 survived and love where they are. Pretty yellow flowers in early spring!
Planted in dry sandy-clay soil along the pond edge, mulched with wood chip. All died during the winter:
- ground cover Irish Moss - live plant quad 4" x 4"
- ground cover White Star Creeper - live plant quad 4" x 4"
- ground cover Scotch Moss - live plant quad 4" x 4"
- Creeping Jenny BARE Root ‘Lysimachia nummularia’ qty 30