When it comes to distinguishing between the Frost Aster ( Symphyotrichum pilosum ) and the Calico Aster ( Symphyotrichum lateriflorum ) , there are a few cardinal differences to consider . While both are specie of asters , they have distinct characteristic that do them apart .

1 . Flowerhead Size : One obtrusive dispute between the two asters is the size of it of their flowerheads . The Frost Aster typically has larger flowerheads compared to the Calico Aster . The Frost Aster ’s flowerheads are more substantial , with a diameter ranging from 1 to 1.5 inch ( 2.5 - 3.8 cm ) . On the other hand , the Calico Aster has smaller flowerheads , appraise around 0.5 to 0.75 inches ( 1.3 - 1.9 centimetre ) in diam .

2 . Petaloid beam : Another severalise feature lies in the number of petaloid rays on the flowerheads . Petaloid rays refer to the flimsy , stretch petals fence the cardinal disk blossom . In the typeface of the Frost Aster , it typically display a greater identification number of petaloid light beam equate to the Calico Aster . The Frost Aster can have up to 40 or more petaloid rays , giving it a fuller and more vibrant show . Conversely , the Calico Aster usually has fewer petaloid rays , ranging from 10 to 25 , resulting in a more modest and delicate flavor .

3 . Leaf Shape and Arrangement : The leaf of these two asters also differ in their shape and arrangement . The Frost Aster has lance - shape leaves that are obtusely haired , giving them a gray - green appearing . These leaves are arrange alternately along the root . In direct contrast , the Calico Aster has narrower leaf that are still or sparsely hairy . The leaves of the Calico Aster are also coif alternately .

4 . Habitat and Growing Conditions : Understanding the rude habitat and grow consideration of these aster can also help differentiate them . The Frost Aster is ordinarily found in teetotal , exposed area , such as prairies , study , and wayside . It thrives in full Lord’s Day and well - drained soil . On the other hand , the Calico Aster favor moist to slimly juiceless land and is often found in woodland edges , hayfield , and along flow banks . It can endure a range of light conditions , from full sunshine to partial shade .

It ’s worth take down that while these differences can more often than not aid identify the Frost Aster and the Calico Aster , there may be variations within each metal money due to factor like regional variation or hybridisation . Therefore , it ’s always beneficial to confabulate a field guide or essay expert advice for precise recognition .

In my personal experience , I have fare across both the Frost Aster and the Calico Aster in various garden setting . The big , showy flowerheads of the Frost Aster make it an excellent choice for adding a soda pop of coloring and attracting pollinator like bees and butterflies . Its abundance of petaloid beam of light creates a sensational display in former summer or early autumn .

On the other helping hand , the Calico Aster ’s delicate appearance and low flowerheads make it an ideal choice for total a touch of elegance to a garden . I have found that its ability to put up different light conditions and its preference for slightly moister land make it various in terms of planting placement .

empathise the difference between these two asters can assist gardeners make informed decisions when choosing plants for their landscape painting . Whether you opt for the larger , showier Frost Aster or the more finespun Calico Aster , both species declare oneself looker and diversity to any garden context .

Caroline Bates