1 20160311_141244     2 2016-03-21 14.55.17     3 2016-03-21 14.06.22

4 2016-03-21 14.13.26     5 2016-03-21 14.56.48
[Click on the thumbnails above to view extremely high resolution photos]

Horticulturalists at the National Park Service are predicting that the cherry blossoms around the Tidal Basin here in D.C. will peak sometime between this coming weekend and the following Tuesday.  One of the methods by which they make this prediction is by gauging the stages of development of the buds on the indicator tree and then comparing that to the development of the buds on the other trees.

There are basically four stages of development for cherry blossoms before they reach their peak bloom.  The first stage is referred to as the green buds stage. This stage, when green color begins to be visible in the small brownish buds, usually occurs between late February and early March.  Cherry blossoms emerge before the leaves on the trees do, and the first sign of their impending arrival are green buds on the branches of the tree.

In the second stage of development florets begin to be visible as the buds slowly open.  This routinely occurs from early to mid March, and anywhere between 12 and 17 days before peak bloom.

The middle stage is referred to as peduncle elongation.  This may be my favorite stage for no other reason than just because of the name.  This is when the blooms grow stems and emerge outward from the buds.  When this stage occurs it is usually about 5 to 10 days until peak bloom.  However, this stage is very susceptible to weather, particularly frost, which can delay the process.

The last stage of development before peak bloom is referred to as puffy white.  This applies to all blossoms, regardless of color.  This averages between four and six days prior to peak bloom, and is characterized by the blooms begin to open up.

Finally, the tree’s peak bloom arrives.  How long the bloom last depends on how long they have been exposed to cold temperatures.  A warm spell in the 60s or 70s will produce blooms lasting four to five days, while colder temperatures could extend the blooming period so that it lasts between seven and 10 days.

Interestingly, during the blooming stage not all blossoms remain the same color.  Many are dark pink when in bud, lighter pink when they first blossom, and then eventually pale pink or white.  Others may open as a white flower and change color to pink over the course of a few days.

The entire blossom season is relatively short.  Full bloom, known as mankai in Japanese, is usually reached within about one week after the opening of the first blossoms, or kaika.  Another week later, the blooming peak is over and the blossoms are falling from the trees like snow from the sky.  Strong wind and rain or other adverse weather can cut the blooming season even shorter.  So don’t hesitate going.  If you do, you may be too late.

Note:  After enlarging it, see if you can find the photo-bomber in the photo for the Green Buds stage.

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