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
Thu Apr 14 00:00:00 GMT 2016 pgarcia5 Japanese zelkova Zelkova serrata Leaves Unfolding (Late) 38.835270000000000 -77.309480000000000 64620
Thu Apr 14 00:00:00 GMT 2016 pgarcia5 Japanese zelkova Zelkova serrata Leaves Changing Color (Middle) 38.835270000000000 -77.309480000000000 64621
Thu Apr 14 00:00:00 GMT 2016 pgarcia5 Japanese zelkova Zelkova serrata Leaves Dropping (Early) 38.835270000000000 -77.309480000000000 64622
Thu Apr 14 00:00:00 GMT 2016 pgarcia5 Japanese zelkova Zelkova serrata Flowers (Early) 38.835270000000000 -77.309480000000000 64623
Thu Apr 14 00:00:00 GMT 2016 pgarcia5 Japanese zelkova Zelkova serrata Fruit (None) 38.835270000000000 -77.309480000000000 64624
Mon Apr 25 00:00:00 GMT 2016 janine Japanese zelkova Zelkova serrata Leaves Unfolding (Middle) 40.131380000000000 -75.137030000000000 65423
Mon Apr 25 00:00:00 GMT 2016 janine Japanese zelkova Zelkova serrata Leaves Changing Color (None) 40.131380000000000 -75.137030000000000 65424
Mon Apr 25 00:00:00 GMT 2016 janine Japanese zelkova Zelkova serrata Leaves Dropping (None) 40.131380000000000 -75.137030000000000 65425
Mon Apr 25 00:00:00 GMT 2016 janine Japanese zelkova Zelkova serrata Flowers (Middle) 40.131380000000000 -75.137030000000000 65426
Mon Apr 25 00:00:00 GMT 2016 janine Japanese zelkova Zelkova serrata Fruit (None) 40.131380000000000 -75.137030000000000 65427
Sat Oct 01 00:00:00 GMT 2016 khuber2 Japanese zelkova Zelkova serrata Leaves Unfolding (Late) 38.644710000000000 -90.506140000000000 70304
Sat Oct 01 00:00:00 GMT 2016 khuber2 Japanese zelkova Zelkova serrata Leaves Changing Color (Middle) 38.644710000000000 -90.506140000000000 70305
Sat Oct 01 00:00:00 GMT 2016 khuber2 Japanese zelkova Zelkova serrata Leaves Dropping (None) 38.644710000000000 -90.506140000000000 70306
Sat Oct 01 00:00:00 GMT 2016 khuber2 Japanese zelkova Zelkova serrata Flowers (None) 38.644710000000000 -90.506140000000000 70307
Sat Oct 01 00:00:00 GMT 2016 khuber2 Japanese zelkova Zelkova serrata Fruit (None) 38.644710000000000 -90.506140000000000 70308
Fri Oct 07 00:00:00 GMT 2016 khuber2 Japanese zelkova Zelkova serrata Leaves Unfolding (Late) 38.644710000000000 -90.506140000000000 70578
Fri Oct 07 00:00:00 GMT 2016 khuber2 Japanese zelkova Zelkova serrata Leaves Changing Color (Middle) 38.644710000000000 -90.506140000000000 70579
Fri Oct 07 00:00:00 GMT 2016 khuber2 Japanese zelkova Zelkova serrata Leaves Dropping (None) 38.644710000000000 -90.506140000000000 70580
Fri Oct 07 00:00:00 GMT 2016 khuber2 Japanese zelkova Zelkova serrata Flowers (None) 38.644710000000000 -90.506140000000000 70581
Fri Oct 07 00:00:00 GMT 2016 khuber2 Japanese zelkova Zelkova serrata Fruit (None) 38.644710000000000 -90.506140000000000 70582
Mon Nov 07 00:00:00 GMT 2016 torijoy Japanese zelkova Zelkova serrata Leaves Unfolding (Late) 40.614640000000000 -73.936800000000000 72699
Mon Nov 07 00:00:00 GMT 2016 torijoy Japanese zelkova Zelkova serrata Leaves Changing Color (Late) 40.614640000000000 -73.936800000000000 72700
Mon Nov 07 00:00:00 GMT 2016 torijoy Japanese zelkova Zelkova serrata Leaves Dropping (Middle) 40.614640000000000 -73.936800000000000 72701
Mon Nov 07 00:00:00 GMT 2016 torijoy Japanese zelkova Zelkova serrata Flowers (Late) 40.614640000000000 -73.936800000000000 72702
Mon Nov 07 00:00:00 GMT 2016 torijoy Japanese zelkova Zelkova serrata Fruit (Late) 40.614640000000000 -73.936800000000000 72703
Thu Nov 10 00:00:00 GMT 2016 torijoy Japanese zelkova Zelkova serrata Leaves Unfolding (Late) 40.000000000000000 -100.000000000000000 73112
Thu Nov 10 00:00:00 GMT 2016 torijoy Japanese zelkova Zelkova serrata Leaves Changing Color (Late) 40.000000000000000 -100.000000000000000 73113
Thu Nov 10 00:00:00 GMT 2016 torijoy Japanese zelkova Zelkova serrata Leaves Dropping (Late) 40.000000000000000 -100.000000000000000 73114
Thu Nov 10 00:00:00 GMT 2016 torijoy Japanese zelkova Zelkova serrata Flowers (Late) 40.000000000000000 -100.000000000000000 73115
Thu Nov 10 00:00:00 GMT 2016 torijoy Japanese zelkova Zelkova serrata Fruit (Late) 40.000000000000000 -100.000000000000000 73116
Mon Nov 21 00:00:00 GMT 2016 jbastos1 Japanese zelkova Zelkova serrata Leaves Unfolding (None) 40.000000000000000 -100.000000000000000 73838
Mon Nov 21 00:00:00 GMT 2016 jbastos1 Japanese zelkova Zelkova serrata Leaves Changing Color (Late) 40.000000000000000 -100.000000000000000 73839
Mon Nov 21 00:00:00 GMT 2016 jbastos1 Japanese zelkova Zelkova serrata Leaves Dropping (Late) 40.000000000000000 -100.000000000000000 73840
Mon Nov 21 00:00:00 GMT 2016 jbastos1 Japanese zelkova Zelkova serrata Flowers (None) 40.000000000000000 -100.000000000000000 73841
Mon Nov 21 00:00:00 GMT 2016 jbastos1 Japanese zelkova Zelkova serrata Fruit (Late) 40.000000000000000 -100.000000000000000 73842
Tue Nov 15 00:00:00 GMT 2016 bpkross1230 Japanese zelkova Zelkova serrata Leaves Unfolding (None) 40.000000000000000 -100.000000000000000 74141
Tue Nov 15 00:00:00 GMT 2016 bpkross1230 Japanese zelkova Zelkova serrata Leaves Changing Color (Late) 40.000000000000000 -100.000000000000000 74142
Tue Nov 15 00:00:00 GMT 2016 bpkross1230 Japanese zelkova Zelkova serrata Leaves Dropping (Late) 40.000000000000000 -100.000000000000000 74143
Tue Nov 15 00:00:00 GMT 2016 bpkross1230 Japanese zelkova Zelkova serrata Flowers (None) 40.000000000000000 -100.000000000000000 74144
Tue Nov 15 00:00:00 GMT 2016 bpkross1230 Japanese zelkova Zelkova serrata Fruit (None) 40.000000000000000 -100.000000000000000 74145
Thu Feb 09 00:00:00 GMT 2017 kenseger Japanese zelkova Zelkova serrata Bud Burst 39.176650000000000 -86.528030000000000 76974
Thu Mar 02 00:00:00 GMT 2017 kenseger Japanese zelkova Zelkova serrata First Leaf 39.176650000000000 -86.528030000000000 76975
Mon Apr 17 00:00:00 GMT 2017 Madelyn2016 Japanese zelkova Zelkova serrata Leaves Unfolding (Late) 40.113658000000000 -75.108333000000000 79454
Mon Apr 17 00:00:00 GMT 2017 Madelyn2016 Japanese zelkova Zelkova serrata Leaves Changing Color (None) 40.113658000000000 -75.108333000000000 79455
Mon Apr 17 00:00:00 GMT 2017 Madelyn2016 Japanese zelkova Zelkova serrata Leaves Dropping (None) 40.113658000000000 -75.108333000000000 79456
Mon Apr 17 00:00:00 GMT 2017 Madelyn2016 Japanese zelkova Zelkova serrata Flowers (None) 40.113658000000000 -75.108333000000000 79457
Mon Apr 17 00:00:00 GMT 2017 Madelyn2016 Japanese zelkova Zelkova serrata Fruit (None) 40.113658000000000 -75.108333000000000 79458

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