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Pruning columnar shaped thuja green giant into pyramid shape

3 years ago

Hi All,


We put in some green giants earlier this year (planted from container), and when they arrived they were thick and lush but weirdly shaped like a column (same width from top to bottom). I didn't think much at the time and thought it would just grow out, but read that it is important to keep a pyramid shape for green giants to ensure the bottom branches get enough light and continue to grow rather than die out (since we are putting these in as screening trees). Thoughout the season, the top/middle of the green giants started growing out a lot and the bottom is not growing at all. I tried pruning the new growth from top/middle back to the same width as the bottom again in hopes the bottom will catch up, but new growth just continues to emerge from the same places where I prune and not really much growth on the bottom. Should I be doing super hard core pruning on the top / middle to force the pyramid shape with pruning from the start instead of the more conservative pruning I'm doing? Have been pretty conservative and pruning as little as I can because I've been worried of damaging the trees. Has anyone experienced and any advice or experience would be greatly appreciated!


Thanks,

Am

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