Next week, I will be planting a large (48" root ball) Betula jacquemontii in a low spot on a site on the water in West Vancouver. The soil drains pretty well, but it is a low spot, and the area has sitting water after rain. I would like advice on planting techniques for wet areas. I have done some research on "mound" planting. Do you think that is the best technique. I know that birches will tolerate wet soils, bot still require drainage.
drainage is important although they will tolerate moist soils. likely a mound of sorts to get the majority of the roots out of the temporary standing water is a good solution. You will need to stake the plant to avoid it failing in the first year or two while becoming established. The ISA has a website that gives good information regarding staking and other tree care issues. www.treesaregood.com