PlantingTrees

On the pain of planting in clay

By December 13, 2023 No Comments

Clay is a bitch

What’s wrong with this picture?

As soon as I saw this poor willow (Salix) planted way too high, I remembered the setting. The entire neighbourhood in Port Coquitlam, British Columbia sits on clay soils which are notoriously tough to dig through and keep the soils soggy because they can’t drain. And so I knocked on the door and asked the owner what happened: and just as I suspected, he gave up digging in the clay and planted the willow high. Good enough! I guess.

Is it good enough?

Is this planting good enough? I don’t think so. With one half of the root ball showing, many roots will desiccate and die. It also looks funny. But I totally understand because once I had to prepare three holes for cherry tree planting and it was a bitch. The clay layer is so tough, it’s easy to give up. I remembered it was solid but I should mention that all three cherries are doing well and flowering every spring.

A better solution?

My solution would be this: take another stab at the clay on the bottom of the planting hole with different tools. Then, once I would run out of energy and bad words, I would “massage” the root ball to make it smaller. It’s very likely that those two steps would allow for planting at grade, just the way we want it.

You can fight clay soils with organic amendments. Adding some to the planting hole and to the backfill soil would help over time. Sometimes you just have to accept the conditions you’re given and do your best. There is no point stressing but I do find the willow root ball sitting high very annoying. I would fight to plant it close to grade. The willow would be happier and I would sleep better at night.

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