Tasmanian Tree Fern -- Medium Size

Two story tall cyatheas....!

Next to an older home in alameda, California

Cyathea Cooperi 'Brentwood'

A faster growing variety of Australian tree fern, distinctive from other varieties by the 'coin spots' on the trunks of mature specimens, where the older fronds have fallen off.

Medium Sized Australian Tree Ferns

Tree Fern Frond and Crozier Details

New Zealand Tree Ferns at the Sunnyside Conservatory in southern San Francisco

These Dicksonia tree ferns have grown well over many decades in location on the side of a building and fence, away from bright sun, and protected from the wind.

Unusual Tree Ferns -- Another Twin Trunk Tree Fern

Attached are two foto graphs of another twin trunk tree fern.  The first shows the tree fern -- in this case, Dicksonia Antarctica -- from the horizontal perspective, viewing the double trunk.  The trunk appears extra wide from this perspective.  

The second foto show the same tree fern from above, looking down at the foliage of the fern fronds.  

From this perspective, the fern appears both attractive and distinctive.  The fern has grown to have fern fronds that overlap and so result in a more cover of the rest of the plant and the ground.  It does not appear that the growth pattern has kept the fronds from unfurling.  In fact, the overlapping fronds seem to produce a denser canopy of protection.  

The denser canopy could have several results.  First, it could capture more light and allow for less light to filter into the understory of the canopy.  Second, the canopy could capture more water and moisture as well as hold moisture underneath more effectively.  The denser canopy may in fact channel rainwater to the (double) crown in a more effective manner. Third, the temperature (in addition to relative humidity) below the canopy may be different from that of a single trunk tree fern.

All of these possibilities could be measured.  If true, the result would be a different environment under the canopy.  The fronds themselves do not appear from the top view to be negatively affected in term s of their appearance.  In other words, they appear as healthy as other tree fern fronds.  

The result could be a more healthy overall tree fern, and also a different growing environment for both younger ferns below the canopy and other plants.  These possibilities could also be scientifically measured and tested.

To the eye, the fern is distinctive and appealing !