Seven inches of snow has temporarily halted Cedar
Maintenance activities at Blue Jay Barrens.
I, along with a large selection of birds, am busying myself with
activities near the house.
Two days before the storm, I was confident of finishing my
planned maintenance work right on schedule.
The weather forecast on this day was calling for scattered snow showers
as the next storm passed well to our south, so I didn’t expect any snow delays. By the next day, it was obvious that the
storm was tracking farther north than anticipated and we were in its path. If the snow cover persists into March, as it
is expected to do, the rest of my cedar maintenance will most likely be
postponed until next year. Fortunately,
I completed work on this two acre field before everything was buried.
This field is primarily a steep, rocky, south facing slope
that presents the most torturous growing conditions of any barren on the
property. Misshapen forms and odd growth
habits characterize the trees trying to survive in this environment. Many individuals could not survive and are
now represented by nothing more than weathered skeletons.
I’ve done quite a bit of clearing in this field, but there
are still a considerable number of cedars left standing.
Despite some patches of thickly growing cedars, enough
sunlight filters through the thin branches to maintain a grass cover beneath
the trees.
Even in areas of maximum sunlight and gentler slopes, the
grass remains short and sparse. There is
maximum opportunity here for some of the more drought tolerant wildflowers to
flourish.
Growing conditions change drastically as you ascend the
hill. At the lowest level, to the left
in the photo, is a gently sloping area where the eroded soil from the hillside
forms a moderately deep foundation for tree roots. Tall, thick trunked cedars crowd that area
and block all sunlight. A rapid change
ensues as the slope increases.
At mid-slope, the incidence of dead trees increases and
growth rates decrease considerably.
These cedars began growing decades before the lower slopes were retired
from growing crops such as corn and sorghum.
That makes these trees at least twice as old as the much larger trees
growing in the deeper soil.
At the upper end of the field, the slope continues on into
the woods. The land here was so steep
and rocky that it could not be used for crop production.
The upper slopes of the field have some of the harshest
growing conditions. The soil is a
shallow layer over limestone bedrock.
Evidence of this bedrock is present in the form of sand, gravel and rock
fragments scattered on the surface. This
is the domain of the Leavenworthias and Drabas, along with a few other hardy
barrens species.
Very few cedars managed to survive long enough in these
gravelly conditions to attain any great size.
Those that did, have created shade islands in which a scattering of
trees and shrubs have managed to survive.
Many of those don’t survive long and leave the cedars with a collection
of dead trunks beneath their branches.
If it weren’t for a few seasonal seeps that provide water to
isolated spots on the slope, there would be no deciduous trees here. In these damp spots, Sycamores and Tuliptrees take root and
prosper for a few years. Eventually, the
tree’s root system is collecting every drop of available moisture. At that point the tree is vulnerable to any
decrease in the water supply and perishes during a year of drought. Dead stumps are monuments to their endeavors.
This three foot high Flowering Dogwood has persisted for
over 30 years. The top branches
continually die and the tree regrows from points lower on the trunk.
The base of the trunk has the appearance of a mature
dogwood. This natural bonsai must have
found the perfect source of water to support a little tree. I remember leaving this little tree when I
did my initial clearing of this field about 20 years ago. At the time, it didn’t seem like a threat and
I’ve always been cautious about removing something until I’m sure that’s the
best thing to do. I’m glad this guy was
spared.
Harsh conditions also make bonsais out of the small
cedars. The branches of these little
trees are constantly dying and being replaced by younger shoots emerging near
the base. The result is an old tree that
only reaches a few inches in height.
The line of wet weather seeps that encouraged the soil slip,
keep this area wet longer into the summer and provide a better growing
environment for the young cedars. Each
clump of grass harbors its own tiny forest of cedar seedlings.
Overall, the field yielded less than a full bushel of cedar cuttings. It has been over ten years since maintenance
was done on this field. Apparently,
cedar colonization here is a slow process, so a repeat of this maintenance
procedure shouldn’t be necessary for at least another decade. Fortunately, I have plenty of other work to
keep me busy in the interim.
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