07/23/2025
Look for evening-primrose along the Greenway and you may find one of these beautiful Primrose Moths!
It’s National Moth Week! That may not sound super exciting, but moths are interesting and important insects, and they can be beautiful too. Take our native Primrose Moth for example — isn’t it pretty?!
Interesting fact #1:
As with many species, the Primrose Moth has a host plant that it relies on for several reasons, similar to the Monarch butterfly.
Fun fact #2:
The Evening-primrose plant (Oenothera spp.) provides nectar for adult Primrose moths and a place to lay their eggs (on the flower buds). The eggs hatch 4–5 days later and the caterpillars eat the flower buds (!). These larvae go through five instars (growing bigger each time) before burrowing into the ground to pupate and overwinter.
Important fact #3:
There is one moth generation per year, and the flower buds develop around the same time the adult moths are flying around looking for their larval host plant.
Neat fact #4:
As the name suggests, the flowers open at night, which invites the nocturnal moths to drink the nectar.
Cool fact #5:
Adult moths often rest in the flowers of evening-primroses during the day and are camouflaged when the flower closes around them. The flower fades from yellow to pink as it wilts. (Is the pictured moth too early? too late?)
Fun fact for trivia #6:
Their straw-like proboscis is half the length of their body when it’s unfurled for drinking nectar.
Nature is amazing. When you slow down and observe what might be considered just a w**d and a moth, you may find something unexpected and beautiful. 🦋
If you liked these fun facts and want to learn more, join us for a wildflower or other trail walk this summer! Visit https://lowelllandtrust.org/category/events/
Sources: northernwoodlands.org, usda.gov, letsgoavocado.com
Photo credit: Leigh Cameron