Posts tagged “Carpinus

Defoliation of American Hornbeam Forest

This Carpinus caroliniana forest was made in the Spring of 2013 and this year it was defoliated for the first time. Owen Reich told me that American Hornbeam respond well to defoliation (maximum once per year) and indeed the results were positive. One issue I noticed is that as the second flush was coming in, some very vigorous leaves grew back at an accelerated pace and became very large. These were periodically removed to allow the smaller, less vigorous leaves to fill in at a more uniform pace.

The tree was defoliated May 31st, just after the new growth had hardened off. One month later, the second flush had filled in and hardened off.

May 20th, ten days before defoliation. I forgot to take a picture right before defoliating the tree.

May 20th, ten days before defoliation (I forgot to take a picture right before defoliating the tree). The leaves here are not quite hardened off. 

May 31st immediately following defoliation.

May 31st immediately following defoliation.

 

The tree today, just over one month after defoliation. One major effect of defoliation is that the smaller interior shoots were allowed to open up. Many did not open up at all in the spring.

The tree today, just over one month after defoliation. One major effect of defoliation was that the smaller interior shoots were allowed to open up. Many did not open up at all in the spring as all of the vigour went to the shoots of the exterior canopy. After defoliation, the density of the tree is much more uniform. 

 

The new leaves are about 50% the size of the old ones. Very nice!

The new leaves are about 50% the size of the old ones. Very nice!


Korean Hornbeam

I have been working on this korean hornbeam since 2006. A major mistake I have been making over the last four or five years has been overfertilizing in the spring. This has limited the development of fine ramification and as a result the growth is still somewhat coarse.

This spring it was thinned and wired. Owen Reich visited my garden last week and he made some adjustments to the positioning of the finer branches, adding more movement and natural lines to the branching.

Late April before cutting and wiring.

Late April before cutting and wiring.

After cutting and wiring, before Owen Reich.

After cutting and wiring, before Owen Reich.

After Owen Reich's adjustments. The details are a bit difficult to see as the tree is leafing out.

After Owen Reich’s adjustments. The details are a bit difficult to see as the tree is leafing out.

An early picture, as purchased.

An early picture, as purchased.


Nick Lenz Pot for Korean Hornbeam

This hornbeam has been in a mica pot for 6 years while I have been building the branches and apex. It is still miles away but in the meantime it will be in a more attractive pot.

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Spring Flushes

We are finally getting consistently warm temperatures, so my trees are really starting to move. Looking at them gives me a reminder that I have a lot of work to do 🙂 Sorry for the busy background… bad camera settings.

Dwarf Japanese Yew

Korean Hornbeam

Juniperus squamata ‘Blue Alps’

Ginkgo. If only the leaves would stay this size!