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Ptelea trifoliata is a small tree, or often a shrub of a few spreading stems, growing to around 6–8 m (20–26 ft) tall with a broad crown. [11] The bark is reddish brown to gray brown, with short horizontal lenticels (warty corky ridges), becoming slightly scaly, The plant has an unpleasant odor and bitter taste.
The plants listed below are plants that would grow in USDA Hardiness zone 5. A good predictor for when a plant will bloom and produce pollen is a calculation of the growing degree days. The color of pollen below indicates the color as it appears when the pollen arrives at the beehive.
Fraxinus lanuginosa (Japanese ash; Japanese: アオダモ Aodamo) is a species of ash native to Japan and to the Primorye region of eastern Russia. [ 1 ] [ 2 ] Fraxinus lanuginosa is a medium-sized deciduous tree growing to 10–15 m tall with a trunk up to 50 cm diameter.
For example, within the City of Chicago region, 2010 statistics show most common street tree species is white ash at 6.2%. Along with third ranked green type at 4.9%, ashes combine to make up 11% percent of the city's street trees, with an overall population of 13,648,044 million standing ashes within Cook County alone.
Pollen.com estimates show that Columbia had a high pollen count of 10.4 on Monday and 10.6 on Tuesday. It’s pollen count rating system ranges from 0-2.4 on the low end to 9.7-12 on the high end.
Fraxinus dipetala, the California ash or two-petal ash, is a species of ash native to southwestern North America in the United States in northwestern Arizona, California, southern Nevada, and Utah, and in Mexico in northern Baja California. It grows at altitudes of 100–1,300 m.
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In mid to late spring, the tree produces small flowers that are not very noticeable. It is dioecious ; it requires two separate plants (male and female) to successfully pollinate and reproduce. The fruit , produced by female trees, is a cluster of samaras , 3–5 cm ( 1 + 1 ⁄ 8 –2 in) long that includes wings similar to maple trees.