science education resource

For K-12 Students • Educators • Homeschool Families • Naturalists


To view these resources with no ads please Login or Subscribe (and help support our site).

Oenothera fruticosa


They are found in dry fields and roadsides.


They have bunches (clusters) of yellow flowers, slightly droopy on top of the plant. They have 4 petals. The leaves are long and pointed with a little bit toothed edge or smooth. They bloom during the day from June through August.

Taxonomic Features (Traits) for Identification

Flower Type: Flowers regular with 4 petals opening in the day and arranged on top (raceme)
Flower Color: Yellow
Leaf Arrangement: Alternate
Plant Type: Wildflower (Large - 1-3 feet)
Leaf Type: Egg-shaped and slightly toothed

To view these resources with no ads, please Login or Subscribe (and help support our site).

Use Teacher Login to show answer keys or other teacher-only items.

Citing Research References

When you research information you must cite the reference. Citing for websites is different from citing from books, magazines and periodicals. The style of citing shown here is from the MLA Style Citations (Modern Language Association).

When citing a WEBSITE the general format is as follows.
Author Last Name, First Name(s). "Title: Subtitle of Part of Web Page, if appropriate." Title: Subtitle: Section of Page if appropriate. Sponsoring/Publishing Agency, If Given. Additional significant descriptive information. Date of Electronic Publication or other Date, such as Last Updated. Day Month Year of access < URL >.

Here is an example of citing this page:

Amsel, Sheri. "Sundrops" Exploring Nature Educational Resource ©2005-2023. January 31, 2023
< > has more than 2,000 illustrated animals. Read about them, color them, label them, learn to draw them.