Observation Tools

Japanese zelkova Photo courtesy of Patrick Breen, Oregon State University, oregonstate.edu/dept/ldplants.

Japanese zelkova (Zelkova serrata)


Plant Family: Elm (Ulmaceae)
Project BudBurst Plant Group: Deciduous Trees and Shrubs

Identification Hints: Japanese zelkova trees are oftenused as ornamental street trees. They are highly resistant to Dutch elm disease, so they are sometimes used in place of American elms. These trees can grow to 100 feet tall and are highly branched with short main trunks. Their growth form also makes them popular in the artof bonsai. The flowers are yellow-green and inconspicuous. The fruits are smallgreen drupes that turnbrown when ripe.

Did you Know? A unique feature of Japanese zelkova trees are the buds. They are small, greenish, and cone-shaped and develop along thebranches in a zig-zag pattern. The flowers are small, green, and inconspicuous.The fruits are small, oval shaped drupes. They start out green and then turn brown when they are ripe. The fruits tend to ripen in late summer and early fall.


Live Map for Japanese zelkova

Other years available for viewing:

Below you can view all observations that have been reported in for Japanese zelkova (If the map below is empty then there have not been any observations reported.)

Use the navigation buttons on the left to zoom in/out and pan around. Click on each place marker to get detail information about that observation.

Leaf/Needles/Stalk = Leaf/Needles/Stalk Flower = Flower Pollen = Pollen Fruiting = Fruiting Color = Color

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The table below displays all the data that has been submitted to Project BudBurst. By default, the data is sorted by the date on which the phenophase occurred. Clicking the up and down arrows next to each column name allows you to sort on any value. If there have been more than 10 observations submitted, you can choose how many to display at a time using the "Show __ entries" control. You can also page through the data using the previous and next buttons at the bottom right of the table.

The Search box allows you to search all of the data. Searching by date, species, phenophase, etc. is easy—just start typing and the table will immediately change to contain only observations that contain your search phrase. Do you want to see only 2012 observations? Just type "2012" in the search box. Only want to see maples? Enter "Acer." You can combine searches, too! Searching for "acer 2012" will narrow your results to only the maples that were observed in 2012 (assuming that any observations exist, of course).

Once you have your results in the order desired, you can use any of the buttons above the search box to copy the results to the clipboard; save them as a text, or spreadsheet; or even print them from your browser!

Observational data for Japanese zelkova:

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Date Contributor Common Name Species Phenophase Latitude Longitude Obs#
Sun Sep 25 00:00:00 GMT 2011 kenmaskell Japanese zelkova Zelkova serrata Leaves Changing Color (Early) 39.916200000000000 -74.784300000000000 13413
Thu Jan 31 00:00:00 GMT 2013 matthewreid007 Japanese zelkova Zelkova serrata Leaves Dropping (Late) 40.248600000000000 -111.650000000000000 17938
Tue Apr 07 00:00:00 GMT 2009 gmwimp Japanese zelkova Zelkova serrata Bud Burst 38.908400000000000 -77.072500000000000 18055
Mon May 06 00:00:00 GMT 2013 UPenn Japanese zelkova Zelkova serrata All Leaves Unfolded 39.949100000000000 -75.209700000000000 19870
Sun Oct 20 00:00:00 GMT 2013 robinv1_Washington_College_reporter24 Japanese zelkova Zelkova serrata 50% Color 39.219200000000000 -76.069600000000000 22706
Wed Oct 09 00:00:00 GMT 2013 izanko Japanese zelkova Zelkova serrata 50% Color 38.989900000000000 -76.939000000000000 22741
Wed Nov 13 00:00:00 GMT 2013 robinv1_Washington_College_reporter24 Japanese zelkova Zelkova serrata 50% Leaf Fall 39.219200000000000 -76.069600000000000 23097
Sat Oct 12 00:00:00 GMT 2013 dsherman Japanese zelkova Zelkova serrata 50% Color 39.156500000000000 -86.605100000000000 23252
Sat Oct 19 00:00:00 GMT 2013 dsherman Japanese zelkova Zelkova serrata 50% Leaf Fall 39.156500000000000 -86.605100000000000 23253
Sat Oct 12 00:00:00 GMT 2013 dsherman Japanese zelkova Zelkova serrata 50% Color 39.156500000000000 -86.605700000000000 23236
Sat Oct 19 00:00:00 GMT 2013 dsherman Japanese zelkova Zelkova serrata 50% Leaf Fall 39.156500000000000 -86.605700000000000 23237
Sat Oct 19 00:00:00 GMT 2013 dsherman Japanese zelkova Zelkova serrata Leaves Dropping (Middle) 39.156500000000000 -86.605100000000000 23235
Sun Oct 06 00:00:00 GMT 2013 robinv1_Washington_College_reporter7 Japanese zelkova Zelkova serrata Bud Burst 39.219200000000000 -76.069600000000000 24101
Wed Oct 30 00:00:00 GMT 2013 robinv1_Washington_College_reporter7 Japanese zelkova Zelkova serrata 50% Color 39.219200000000000 -76.069600000000000 24102
Sun Nov 17 00:00:00 GMT 2013 robinv1_Washington_College_reporter7 Japanese zelkova Zelkova serrata 50% Leaf Fall 39.219200000000000 -76.069600000000000 24103

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