PERENNIALS > ASTERS

IN THIS GUIDE

ASTERS GUIDES

purple and yellow asters flowers with pollinators

Container GrowingGrowing From SeedTransplantingPropagationVarieties

Asters , also known as ‘ Michaelmas Daisies ’ , are popular herbaceous flowering perennials that look wonderful in many UK gardens .

Whether you are trying to createa traditional bungalow garden feelor more New prairie - style planting , Asters can be a go - to choice .

purple Aster amellus flowers blooming in a garden

Aster amellus

They depend adorable – and can be great for the bees , butterflies and other beneficial worm that visit your garden .

And of track , what is good for the wildlife in your garden is good for you as a gardener too – since the racy biodiversity makes it easier for you to grow your own food for thought and derive other yields from your organic garden .

Overview

PreferredFull Sun ( some Partial Shade )

ExposureExposed or Sheltered

Height0.1 – 0.5 M

lilac and yellow flowers of Aster tripolium

Aster tripolium

Spread0.1 – 0.5 M

Bloom TimeAugust – October

PreferredMost Soil Types

Aster x frikartii ‘Monch’ with long purple-coloured petals

Asterxfrikartii‘Monch’

MoistureMoist but well drained

pHAny

The genus Aster once included over 500 different species of perennial flowering plant from Eurasia and North America.1The BRAHMS Project , University of Oxford , Department of Plant Sciences . ( n.d.).Aster coinage . Oxford University Plants . Retrieved March 9 , 2023 , fromhttps://herbaria.plants.ox.ac.uk/bol/plants400/Profiles/AB/Aster

beautiful butterfly sat on Symphyotrichum novi-belgii flowers

Symphyotrichum novi-belgii

However , research during the 1990s contribute to North American coinage being reclassify into different genus – such as , for example , EurybiaandSymphyotrichum.2Why Do Plant Names Change?(2014 , July ) . RHS the Garden . Retrieved March 9 , 2023 , fromhttps://www.rhs.org.uk/about-the-rhs/publications/the-garden/the-garden-back-issues/2014-issues/july/plant-name-changes.pdf

Nonetheless , these North American species are usually still referred to as Asters .

In this article , we will include and run through these metal money too – since the care and rise tips for these flora are often the same or very similar to the ( rough 180 ) Eurasiatic species in this genus .

Aster tongolensis flower with violet petals and a glowing orange centre

The term ‘ Aster ’ come from the ancient Greek for ‘ star ’ – the name refers to the shape of the flower head.3Definition of aster . ( n.d . ) . Inwww.dictionary.com.https://www.dictionary.com/browse/aster

The genus Aster is part of the large Asteraceae industrial plant family , also know as the ‘ daisy ’ or ‘ sunflower ’ family.4Petruzzello , M. ( 2015 , October 9).List of plant in the family Asteraceae . Encyclopedia Britannica . Retrieved March 9 , 2023 , fromhttps://www.britannica.com/topic/list-of-plants-in-the-family-Asteraceae-2040400

This is a Brobdingnagian plant crime syndicate with over 32,000 different specie , many of which are plebeian garden flowers.5Asteraceae . ( n.d . ) . Global Biodiversity Information Facility . Retrieved March 9 , 2023 , fromhttps://www.gbif.org/species/113579929Aster tripolium

a flower bed with absinthe wormwood, ornamental grass and asters

There is in reality only one native Aster in the UK – theAster tripolium , or ocean aster.6Aster ( Sea ) / Sea Aster . ( n.d . ) . Wild Flower Finder . recover March 9 , 2023 , fromhttps://wildflowerfinder.org.uk/Flowers/A/Aster(Sea)/Aster(Sea).htm

Another species formerly know asAster linosyrisis now known asGalatella linosyris .

However , many Asters from Europe and North America , and hybrids derived from them , can be grow well and successfully in UK gardens .

asters shown growing in a walled garden

Why Grow Asters?

Asters take their common name – Michaelmas Daisies – from the fact that they mostly blossom in late summertime or former fall .

They can be splendid selection where you require to ensure you have flush in blossom in your garden over as much of the class as potential .

They take over where summertime anthesis efflorescence entrust off – and can bridge the gap between the summertime and autumn seasons in your garden .

Carder Bee collecting pollen from a half-opened Aster flower

Asters can raise in all UK hardiness zones and can be useful for attracting wildlife to your garden .

They can be beneficial for pollinator , and are important food plants for the larvae of a number of vernacular butterfly and moths .

Another benefit of growing Asters , of course , is that these perennials will render to blossom in your garden year after year .

withered aster flowers with ripe seeds

And like many other recurrent plants , they will command very little care , so could be a not bad choice for a comparatively down - maintenance garden scheme .

Growing Options

There are a nifty many different Asters that you might regard choosing for your garden .

Some great options for UK gardeners include :

“ Callistephus chinensis , the China aster , is a terrific plant life that is often overlooked as it is an yearly , ” shares Dan Ori , Master Horticulturist .

aster seedlings in a propagation tray

“ However ,   it can be seed directly to the stain in saltation each year .

“ There are many form   available   let in the Duchess serial , which has flowers that are Chrysanthemum - like and come in single , semi - double , and double   form .

“ They range from 20 cm to 70 centimetre in height , giving you lots of options for pots and mete and he tall potpourri work exceptionally well as weakened blossom . ”

rudbeckia and asters growing as companion plants

When choosing Asters for your garden , the size and hues of the blooms are one thing to consider , but you should also remember about the distinctive height of the plant .

Since this will specify whether they will work well towards the back , in the middle , or near the front of a bed or border on in a container – some Asters are much tall than others .

See a full partitioning of Aster varietiesin this billet .

Aster x frikartii ‘Wunder von Stafa’ growing from a perennial border

Asterxfrikartii‘Wunder von Stafa’

How To Grow Asters

Asters wait great in herbaceous recurrent borders , especially alongside other repeated flowering plants and hayfield grasses .

They are ripe at plate in a prairie planting scheme – the heyday are gay and colorful , and a number of varieties also make splendid cut flowers .

They can be great for a traditional bungalow garden , but many varieties can also do work well in a more contemporary scheme .

various flowers in a pot being watered by a metal jug

These repeated flowers will thrive in almost any grime type , ideally one that is moist but well - drained to well - drained .

They will usually do well in areas of full Lord’s Day though many variety can also cope with partial or mottled spectre .

Many potpourri are also excellent for turn in containers .

powdery mildew shown on plant foliage

Remember to rate Asters in a locating which suits their show and form – and note their eventual height when make up one’s mind where to lay them .

fend off identify taller Asters in a location that is too exposed , where they may be open to wind wrong .

A moulding of Asters and grandiloquent perennial grasses can also have wider practical program .

secateurs being used to cut back aster plant growth

For example , it can be used to ‘ borrow ’ landscape painting from beyond the edges of a rural garden – tying in the garden with farm fields beyond .

A border of repeated prime and supergrass might also screen another part of the garden from eyeshot , or partially confuse a purview without totally block it .

Planting

Aster seedlings or cuttings should be planted out , typically , between March and May .

This is also the metre when you should implant out Asters as potted plant that you have purchase for your garden .

Asters should typically be place with a spacing of around 40 cm between plant .

new growth of Aster spathulifolius in dry winter soil

Companion Planting

Asters are various perennial that will lick well alongside many other herbaceous perennials in a seam or garden boundary line .

Asters front fantastic alongside other herbaceous perennials for summertime and autumn including :

And alongside a wide range of decorative Mary Jane such as :

Aster Plant Care

Caring for Asters does not require a lot of work .

In fact , when placed in the right fix , Asters will need very piffling care and be a great alternative for a low - maintenance garden .

Watering

Keep the land well - watered , but do not get Asters sit with wet feet .

Watering problems are the most common reason for one of the master issue that Aster cultivator can encounter – mould .

These flowering plant can be rather prostrate to mildew problems ; over - lachrymation is one of the most coarse causes .

Typically , in normal UK term , watering in addition to lifelike rainfall will not be required ( unless they are develop in container ) .

In drouth conditions , or when growing in container , a thoroughgoing soaking every two weeks should be sufficient to see them through hot and ironical periods .

Mildew Issues

ordered watering , but a well - drain medium or soil , and good air - flow around the plant can help to trim the likelihood that this job will occur .

Avoid overcrowd your plants – and do not irrigate too much .

If you experience a lot of problem with mould in your particular garden , then it could be a salutary idea to search for more mould - resistant cultivars or mixed bag .

Feeding

aster typically do not require particularly gamey levels of nutrient ; fertilizer will not typically be required .

Usually , it will be enough to simply mulch around the plant with a good quality organic mulch , which will roleplay as a dull - dismission fertiliser over time .

When growing in quite a little , however , or to better very inadequate soil , you may like to add blood Pisces and bone or another constitutional fertiliser a duet of times during the unfolding period .

Deadheading & Cutting Back

Deadheading the plants and getting rid of spent flowers can also assist to reduce the relative incidence of any problems of this character .

Deadheading will also keep them looking good for longer and will encourage them to develop more flowers .

To get as many flowers as potential from your Asters , you should pinch out top shoot at midsummer , then deadhead as you go .

I like to turn off back my Asters hard after flower finishes in fall .

Division

Asters should also be separate every four years or so .

This will help the flora to retain their energy , and forestall bunch from becoming too congested .

For the health of the existing plant , I receive it best to divide mature Asters in the saltation , just as young growth begins .

References