Perennial Late Summer, Fall Blooms

With September around the corner I have started to sell mums and asters.  Otherwise the greenhouses are pretty much empty.  It's Aug. 30 and here is what is blooming now.

Helianthus 'Happy Days' - Shorter than most helianthus and rated zone 5, 

but it made it here in zone 4.  It reminds me of a dahlia.

-----------------------------------------------------------------------

Lobelia Siphilitica ('Blue Cardinal Flower')

-------------------------------------------------------------------------------

Sanguisorbia Canidensis  - Always welcome in the late summer as an addition 

to bouquets.  It's a spreader, is about 4' tall and has nice scalloped foliage.

---------------------------------------------------------------------------------------

Silphium perfoliatum (Cup flower) in the back ground is 8' tall this year. 

 In the foreground is a dark-leaved cimicifugia (now renamed actea.)

-----------------------------------------------------------------------------------

One of my favorite summer phlox varieties, 'Laura', is a heavy bloomer this time of year.

--------------------------------------------------------------------------------------

Artemesia Lactiflora is one of the few artemesias that prefer moist soil.  It's like a very tall (4-5') delicate astilbe covered with plumes of creamy white flowers.