Mature size & growth rate

How big does Aromatic Aster 'Raydon's Favorite' (Symphyotrichum oblongifolium) get?

Also called Aromatic Aster, Fall Aster, Wild Blue Aster.

More about aromatic aster 'raydon's favorite'

About Aromatic Aster 'Raydon's Favorite'

Symphyotrichum oblongifolium · also called Aromatic Aster, Fall Aster · flowering

A tough, fragrant native aster from the central and eastern US prairies, producing masses of violet-blue daisies in autumn on strongly aromatic foliage. 'Raydon's Favorite' is notably drought-tolerant and mildew-resistant, making it far easier to grow than novi-belgii cultivars. Mildly toxic to dogs and cats.

Mature size: 60-90 cm tall, 60-90 cm spread

Indoor size vs how big it gets in the wild

Aromatic Aster 'Raydon's Favorite' grows into a room-scaled plant of roughly 60-90 cm tall, 60-90 cm spread — bigger than a tabletop plant, but not a tree. Indoors and in a pot, expect 60-90 cm tall, 60-90 cm spread. A pot, your light levels and a little pruning are what set the final size in a home, far more than the plant's theoretical potential.

It builds steadily in both height and spread to a medium, manageable size, filling a pot and a corner over a few years.

Growth rate and years to mature

Aromatic Aster 'Raydon's Favorite' is a moderate grower. Realistically, expect three to six years to reach mature indoor size, gaining a steady amount each growing season. Its feeding profile backs this up: little fertiliser is needed — a light top-dressing of compost in spring is usually sufficient. over-feeding with nitrogen produces tall, floppy growth; this species actually performs best in lean conditions.

Want this turned into the right next pot at the right moment? The pot size calculator and the aromatic aster 'raydon's favorite' repotting guide cover when and how much to size up — pot size is one of the biggest levers on how fast aromatic aster 'raydon's favorite' grows.

How to keep aromatic aster 'raydon's favorite' smaller

You are not stuck with the maximum size. For aromatic aster 'raydon's favorite' specifically, these are the levers, in order of impact:

Prune the tallest or longest growth back to a node to hold aromatic aster 'raydon's favorite' at the size you want.
Keep it slightly pot-bound and feed sparingly to cap the overall size.
Remove the largest or oldest leaves to keep the footprint in check.

How to grow aromatic aster 'raydon's favorite' bigger or faster

If you want it to fill the space sooner, push the conditions rather than hoping — for aromatic aster 'raydon's favorite' the accelerators are:

It already has good light; a yearly pot-up plus spring-summer feeding drives the fastest growth.
Pot up a size every year or two while it is establishing.
Feed and water consistently through the growing season for steady, faster size gain.

Light is almost always the ceiling. The aromatic aster 'raydon's favorite' light requirements page covers exactly how bright a spot it needs to grow at its potential instead of stalling.

When aromatic aster 'raydon's favorite' outgrows the room (or the pot)

"Too big" usually arrives as one of these signs for aromatic aster 'raydon's favorite':

It crowds the shelf or corner it lives in and starts leaning for light.
Roots circling the pot base or escaping the drainage holes.
It needs a noticeably bigger pot every year — a sign to pot up, divide, or prune.

If it is the pot rather than the room, it is a repotting job, not a goodbye — see the aromatic aster 'raydon's favorite' repotting guide. If you want more of this plant instead of a bigger one, the aromatic aster 'raydon's favorite' propagation guide turns prunings into new plants.

Aromatic Aster 'Raydon's Favorite' size — frequently asked questions

How big does aromatic aster 'raydon's favorite' get?

Aromatic Aster 'Raydon's Favorite' reaches 60-90 cm tall, 60-90 cm spread when grown indoors. It builds steadily in both height and spread to a medium, manageable size, filling a pot and a corner over a few years.

Is aromatic aster 'raydon's favorite' slow or fast growing?

Aromatic Aster 'Raydon's Favorite' is a moderate grower. Expect three to six years to reach mature indoor size, gaining a steady amount each growing season. Aromatic Aster 'Raydon's Favorite' grows into a room-scaled plant of roughly 60-90 cm tall, 60-90 cm spread — bigger than a tabletop plant, but not a tree.

How long does aromatic aster 'raydon's favorite' take to reach full size?

Roughly three to six years to reach mature indoor size, gaining a steady amount each growing season. Light, pot size and feeding move that timeline more than anything else.

How do I keep aromatic aster 'raydon's favorite' smaller?

Prune the tallest or longest growth back to a node to hold aromatic aster 'raydon's favorite' at the size you want. Keep it slightly pot-bound and feed sparingly to cap the overall size. Remove the largest or oldest leaves to keep the footprint in check.

How can I make aromatic aster 'raydon's favorite' grow bigger or faster?

It already has good light; a yearly pot-up plus spring-summer feeding drives the fastest growth. Pot up a size every year or two while it is establishing. Feed and water consistently through the growing season for steady, faster size gain.