Upland White Aster (Solidago ptarmicoides)

Yes, it’s September, but that doesn’t mean you have to put away your gardening implements yet! There’s still a few good weeks before the weather really starts turning. We’ve already written about a few ways you can prepare your summer garden for the impending fall, and now we’re going to turn our attention to a perennial that does particularly well in summer and will transition nicely into the fall weather. The Upland White Aster (Solidago ptarmicoides) will remind you of summer days throughout fall with its daisy-like looks. It’s one of our favourite flowers here at St. Williams, and we know you’re going to love it too.

A Real Looker

This beautiful flower grows to a height of about 25-40 cm (9-15”), and spreads to about 30-45 cm (12-18”). One thing you’ll notice about the flower right away are its pure white petals, and its tan-yellow pistil. It’s a beautiful specimen that is reminiscent of the common daisy. Upland White Aster (Solidago ptarmicoides) does best in partial to full sun areas with dry to medium soil, and will bloom from August through September, so you may already see it flourishing in your garden. If you haven’t planted any White Aster, now is the perfect time to do so. The fact that Upland White Aster does well in drier conditions makes it a perfect choice for planting in a rock garden, or amongst other showy perennials.

Prevalent in Ontario

Upland white Aster used to be thought quite rare in Ontario, but according to brucetrail.org, “…further botanical surveys in northern areas of the province revealed that it was quite common. This is apparent on many of the BTC’s [Bruce Trail Conservancy] properties in the Peninsula section as BTC ecologists regularly see this plant during their inventories.” Now we know that this pretty little plant is gracing a large portion of the province with its presence.

No, Dear

The Upland White Aster (Solidago ptarmicoides) is also beloved by bees, birds and butterflies. This flower is a great resting spot for pollinators, which is a huge bonus for us. Plus, the plant has been known to resist deer, so if you’re wary about fauna wandering in to eat your flora, Upland White Aster may be just the plant you’re looking for!

It’s Its Own Flower

Interestingly enough, Upland White Aster (Solidago ptarmicoides) has had taxonomists stumped for a number of years. As its name implies, it was originally classified as an Aster. It was later agreed upon that it was a Goldenrod. Now, the plant is classified under its own genus with other forms of goldenrod species. As a result, the plant is sometimes referred to as Upland White Goldenrod.

If you’re looking for a flower to plant amongst a garden of other perennials, or even something to spruce up that rock garden of yours, you can’t go wrong with Upland White Aster. This flower is beautiful, and its summery aesthetic will have you thinking of warmer days even as we move into the fall.


To learn more about Upland White Aster (Solidago ptarmicoides) and more species like it, stay tuned to stwilliamsnursery.com, and don’t forget to follow us on Facebook, Twitter, and YouTube for features like Fast Facts, Did You Know, and more!

Species Profile: Upland White Aster (Solidago ptarmicoides)