Observation Tools

Green ash Photo courtesy of Patrick Breen, Oregon State University, oregonstate.edu/dept/ldplants.

Green ash (Fraxinus pennsylvanica)


Plant Family: Olive (Oleaceae)
Project BudBurst Plant Group: Deciduous Trees and Shrubs

Identification Hints: Green ash trees are common throughout the eastern United States. They are very common street trees that can growup to 80 feet tall. The green leaves are "pinnately compound," in this case meaning that the "leaf" consists of 7-9 leaflets (3-4 sets of leaflet pairs along the stem and one leaflet at the end). Green ash flowers and leaves appear at roughly the same time during the spring and the flowers areinconspicuous, so look closely!

Did you Know? Green ash trees are wind pollinated. The male and female flowers occur on separate trees and the male flowers emerge before female flowers. Also, Green ash seeds require "cold stratification" in order to germinate, meaning that they must overwinter under cold temperatures or they won't germinate in the spring. In recent years, the Emerald ash borer, an invasive insect in the United States accidentally introduced in the 1990's, has become a threat to many types of ash trees.


Live Map for Green ash

Other years available for viewing:

Below you can view all observations that have been reported in for Green ash (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 Green ash:

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Date Contributor Common Name Species Phenophase Latitude Longitude Obs#
Sat Sep 17 00:00:00 GMT 2011 palaback Green ash Fraxinus pennsylvanica Leaves Changing Color (Early) 40.420800000000000 -105.084000000000000 13288
Wed Sep 21 00:00:00 GMT 2011 dnb23 Green ash Fraxinus pennsylvanica Leaves Changing Color (Middle) 42.480400000000000 -76.451200000000000 13327
Sun Sep 25 00:00:00 GMT 2011 kenmaskell Green ash Fraxinus pennsylvanica Leaves Changing Color (Early) 39.916200000000000 -74.784300000000000 13414
Mon Sep 26 00:00:00 GMT 2011 melia718 Green ash Fraxinus pennsylvanica Leaves Changing Color (Late) 39.999800000000000 -105.264000000000000 13437
Wed Sep 28 00:00:00 GMT 2011 cmeier47 Green ash Fraxinus pennsylvanica Leaves Changing Color (Early) 40.016000000000000 -105.246000000000000 13469
Mon Oct 03 00:00:00 GMT 2011 cralston Green ash Fraxinus pennsylvanica 50% Leaf Fall 47.923600000000000 -97.053800000000000 13493
Mon Oct 10 00:00:00 GMT 2011 palaback Green ash Fraxinus pennsylvanica Leaves Changing Color (Middle) 43.386200000000000 -72.082000000000000 13545
Tue Oct 11 00:00:00 GMT 2011 palaback Green ash Fraxinus pennsylvanica Leaves Changing Color (Late) 43.351200000000000 -72.040300000000000 13622
Thu Oct 13 00:00:00 GMT 2011 palaback Green ash Fraxinus pennsylvanica Leaves Changing Color (Middle) 43.363500000000000 -72.094500000000000 13680
Mon Oct 17 00:00:00 GMT 2011 palaback Green ash Fraxinus pennsylvanica Leaves Dropping (Early) 40.307500000000000 -90.000000000000000 13691
Sat Oct 22 00:00:00 GMT 2011 palaback Green ash Fraxinus pennsylvanica Leaves Changing Color (Late) 40.396000000000000 -105.102000000000000 13766
Wed Sep 12 00:00:00 GMT 2012 palaback Green ash Fraxinus pennsylvanica Leaves Changing Color (Early) 40.314900000000000 -105.091000000000000 16603
Sun Apr 07 00:00:00 GMT 2013 cmgilpin Green ash Fraxinus pennsylvanica Bud Burst 39.154700000000000 -86.572300000000000 18618
Wed Apr 10 00:00:00 GMT 2013 Mango55 Green ash Fraxinus pennsylvanica Bud Burst 40.208200000000000 -76.771900000000000 18782
Mon Apr 15 00:00:00 GMT 2013 Mango55 Green ash Fraxinus pennsylvanica First Flower 40.208200000000000 -76.771900000000000 18964
Wed Apr 17 00:00:00 GMT 2013 Mango55 Green ash Fraxinus pennsylvanica Full Flower 40.208200000000000 -76.771900000000000 18998
Wed Mar 20 00:00:00 GMT 2013 NHStudent Green ash Fraxinus pennsylvanica Leaves Unfolding (Early) 40.103900000000000 -105.171000000000000 19053
Thu Mar 21 00:00:00 GMT 2013 NHStudent Green ash Fraxinus pennsylvanica Leaves Unfolding (Early) 40.103900000000000 -105.171000000000000 19062
Thu Mar 21 00:00:00 GMT 2013 NHStudent Green ash Fraxinus pennsylvanica Leaves Unfolding (Early) 40.103900000000000 -105.171000000000000 19061
Sat Apr 20 00:00:00 GMT 2013 Mango55 Green ash Fraxinus pennsylvanica First Leaf 40.208200000000000 -76.771900000000000 19109
Wed May 01 00:00:00 GMT 2013 Mango55 Green ash Fraxinus pennsylvanica All Leaves Unfolded 40.208200000000000 -76.771900000000000 20011
Thu May 09 00:00:00 GMT 2013 MiddleburyBio140 Green ash Fraxinus pennsylvanica Leaves Unfolding (Late) 43.998100000000000 -73.174500000000000 20154
Fri May 10 00:00:00 GMT 2013 allib001 Green ash Fraxinus pennsylvanica First Flower 45.053700000000000 -92.812700000000000 20232
Fri May 17 00:00:00 GMT 2013 allib001 Green ash Fraxinus pennsylvanica All Leaves Unfolded 45.053700000000000 -92.812700000000000 20492
Sat Jun 22 00:00:00 GMT 2013 allib001 Green ash Fraxinus pennsylvanica First Ripe Fruit 45.053700000000000 -92.812700000000000 21422
Fri Sep 13 00:00:00 GMT 2013 Rogers Green ash Fraxinus pennsylvanica First Ripe Fruit 39.160800000000000 -86.505400000000000 22041
Tue Sep 24 00:00:00 GMT 2013 allib001 Green ash Fraxinus pennsylvanica 50% Color 45.053700000000000 -92.812700000000000 22338
Wed Oct 02 00:00:00 GMT 2013 allib001 Green ash Fraxinus pennsylvanica 50% Leaf Fall 45.053700000000000 -92.812700000000000 22339
Tue Oct 22 00:00:00 GMT 2013 robinv1_Washington_College_reporter24 Green ash Fraxinus pennsylvanica 50% Leaf Fall 39.219200000000000 -76.069600000000000 22826
Thu Oct 17 00:00:00 GMT 2013 robinv1_Washington_College_reporter24 Green ash Fraxinus pennsylvanica 50% Color 39.219200000000000 -76.069600000000000 22828
Sat Oct 12 00:00:00 GMT 2013 robinv1_Washington_College_reporter1 Green ash Fraxinus pennsylvanica 50% Leaf Fall 39.219200000000000 -76.069600000000000 22816
Fri Nov 08 00:00:00 GMT 2013 dancyn2005 Green ash Fraxinus pennsylvanica Leaves Changing Color (Late) 36.823100000000000 -84.945100000000000 23025
Mon Oct 07 00:00:00 GMT 2013 kashrews Green ash Fraxinus pennsylvanica 50% Color 39.152400000000000 -86.492000000000000 23192
Fri Oct 18 00:00:00 GMT 2013 kashrews Green ash Fraxinus pennsylvanica 50% Leaf Fall 39.152400000000000 -86.492000000000000 23193
Mon Nov 05 00:00:00 GMT 2012 robinv1_Washington_College_reporter1 Green ash Fraxinus pennsylvanica 50% Color 39.219200000000000 -76.069600000000000 24147
Mon Sep 30 00:00:00 GMT 2013 robinv1_Washington_College_reporter10 Green ash Fraxinus pennsylvanica 50% Color 39.219200000000000 -76.069600000000000 24235
Mon Oct 14 00:00:00 GMT 2013 robinv1_Washington_College_reporter10 Green ash Fraxinus pennsylvanica 50% Leaf Fall 39.219200000000000 -76.069600000000000 24236
Wed Oct 16 00:00:00 GMT 2013 robinv1_Washington_College_reporter20 Green ash Fraxinus pennsylvanica 50% Color 39.219200000000000 -76.069600000000000 24200
Mon Oct 21 00:00:00 GMT 2013 robinv1_Washington_College_reporter20 Green ash Fraxinus pennsylvanica 50% Leaf Fall 39.219200000000000 -76.069600000000000 24201

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