On a recent vacation, I had the opportunity to visit a mine that produces scoria. Scoria is the proper name for lava rock. The locals, however, refer to it as “cinder” – an older name for the substrate. Unsurprisingly, the mine itself is a big hole in the ground. Scoria mine The scoria is scooped […]
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Repotting an olive bonsai
I could have guessed that an olive I took home a few years ago had a trunk that extended below the soil. It was potted in a deep container and was far heavier than I’d expected. I confirmed this was the case the first time I repotted the tree. There wasn’t much to do about […]
Cutback and partial defoliation on trident maple
Healthy trident maples are among the most vigorous deciduous bonsai species. When they are growing well, they can be defoliated three – and sometimes four – times each year. Climate and tree health determine exactly how many times makes sense for any given tree. I partially defoliated a root-over-rock trident back in June. Two weeks later, […]
When not to use colanders for developing young bonsai
I’ve been using colanders and perforated pots like pond baskets for years to grow pines. They’re great for developing roots, they allow for frequent watering and they’re easy to find. What they aren’t great for are developing deciduous bonsai – at least, not without proper watering. Most deciduous trees want a lot of water. Colanders […]
Larger pots make a big difference for young pines
I’ve been growing black pines for a long time. My approach has been pretty consistent the past few years and I can dependably produce trees that look like the following after 2½ years. 2½-year-old black pine This past year I made a small change to the process. Here’s the same 2½-year-old pine next to a […]