ANNUALS > CORNFLOWER

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CORNFLOWER GUIDES

beautiful blue cornflower in focus

Container GrowingGrowing From Seed

Centaurea cyanus are beautiful plus to your garden , and can be a great choice for a meadow planting dodge or even placed in your veg garden .

When most people spill about cornflowers , they are talking about annual cornflowers , Centaurea cyanus , and it is these annuals that we are referring to in this clause .

crowded clumps of Centaurea cyanus in a garden border

The annual cornflower,C. cyanus, is a well-known meadow plant.

However , it is worth noting that there is also a perennial cornflower , Centaurea montana , and a reach of other repeated Centaurea ( knapweeds ) which can be either herbaceous perennials or suffrutex – and these can also be great choices for your garden .

Overview

PreferredMostly Full Sun

ExposureExposed or Sheltered

Height0.5 – 1 M

honeybee sat on a blue centaurea cyanus flower with white and yellow daisies in the background

Spread0.1 – 0.5 one thousand

Bloom TimeMay – September

PreferredMost dirt types

a wildflower meadow with poppies, calendula, lobularia and more

MoistureWell - drain or moist but well - enfeeble

pHAny

Another uncouth name for this plant is ‘ Bachelor ’s button ’ .

blue cornflowers in a wildflower display with orange and yellow flowering plants outside in front of a road

It is a wildflower aboriginal to the UK which is very democratic in cut garden and wildlife - friendly gardens .

This isa hardy annual , with an RHS hardiness rating of H6 .

It grows up to around 75 atomic number 96 marvelous , and expect beautiful deep ( commonly blue ) flowers in the tardy leap and summer months , from around June to August .

cornflower seedling in a black plastic pot

Once , cornflowers were common as a pot in cornfield – hence the name .

However , change in agricultural practices have in mind that it is now very rare to find it growing of course on farms .

Cornflowers are typically blue , but cultivars are also available in a range of other colours , from blues that are almost black , to pink , red and white .

a blue cornflower covered with water droplets

Why Grow Cornflowers?

bachelor’s button are not only an attractive annual prime .

They are also extremely beneficial for attract bee , butterfly and other useful insects to your garden .

This means that they can be helpful for organic gardener .

Centaurea cyanus flowers in various shades of blue presented in a vase outside

Cornflowers are relatively well-heeled to grow , and low maintenance – in the right location , they can often self - seed promptly .

What is more , they can put up us with a yield as well as just look pretty .

you’re able to deplete the untested shoots of cornflower , and the flowers can be add to a salad .

knapweed flower shown after having gone to seed

The blossom are also an ingredient in several democratic tea blends , such as ‘ Lady Grey ’ .

How To Grow Cornflowers

Cornflowers ferment very well alongside poppy and other hardy annuals in an yearly wildflower meadow planting scheme .

Othernative annualsfor such a schema let in corn whiskey Anthemis nobilis , bury - me - nots , wild candytuft , untamed pansy and yellow rattling ( which facilitate suppress supergrass ontogeny ) .

They can also be an excellent choice in more courtly planting of annual flowers in a piercing garden .

cornflower ‘black ball’ growing in a field

Try plant them alongsidemarigolds , calendula , cosmosandzinnias , for deterrent example .

Reds , yellows and atomic number 79 really bring out the blue of these flowers , but perhaps the very best way to come out bachelor’s button in your garden is within your veggie garden .

Cornflowers can be sow in hugger-mugger in a greenhouse or indoors in March , and planted out in May , or they can be verbatim sown where they are to get in April or May .

blue ball variety of cornflower in the garden

sow the seed straight is most common – sprouting rates will usually be good as long as the temperatures are between 10 - 16 ° one C .

In area where the winter does not get too cold-blooded , you could also inseminate cornflowers in an unwarmed greenhouse or polytunnel in September , for early flowers and larger plant the following twelvemonth .

Seethis guidefor more information on grow from seeded player .

Blue Diadem flower in bloom

Since they are so good at attract pollinator and other good insects , they make excellent comrade plants for a number of common yearly crop – perhaps place in peck or containers cheeseparing to the main bed , or in a border along the edge of the kitchen garden domain .

They can also do well in a seam with Mediterranean herb or other plants which like free - draining conditions .

Uvularia grandiflora will thrive in a web site in full sun in a well - drained loam or sandy soil .

magnified view of pink and white ‘Classic Magic’ Centaurea

They are unfussy when it come to soil pH , even stand very alkaline conditions .

These flowers do not require nutritionally rich stipulation and in fact , can do well even in humbled fertility rate status .

This stand for they can be placed in a sheltered or exposed localization .

double blue centaurea

Plant Care

As mentioned above , these annual flush require very little care .

They are a low - criminal maintenance plant and can be a beneficial choice for new gardeners , or when gardening with nestling .

Over the summertime , cornflowers should not require much extra watering , if any at all .

dwarf midget blue flower with light blue petals

They are pretty resistant of ironical conditions and can handle some drought .

In fact , overwatering or too much rain can be more of a problem .

So check that the soil or growing culture medium is draining freely .

you may cut flowers to direct in an transcription inside your home – but be sure to leave some flowers for the bee and other worm who share your garden .

Cut off the flowers just above a knob and they should send out up newfangled flowers to replace those you have withdraw .

you’re able to enjoy the cornflowers you cut back as fresh heyday , or you’re able to dry out them .

One good thing about dry out cornflowers is that their blush retain their colour well when dried .

Even if you are not have usance of the flowers , you should bump off spent flower head word .

Deadheading regularly through the recent spring and early summertime should mean that you get more heyday over the summertime .

However , ensure that you break deadheading as summer progresses , and rent some of your flora go to germ .

Not only is there the chance for ego - seeding or come collection for next year , the seeds arealso attractive to birds , and make a secure food source for several species .

Remember , these are one-year plants , which will need to be re - sown ( or allow to ego - semen ) each class – but they can still be an excellent option for many gardens in the UK .

Cornflower Varieties

you’re able to buy typical cornflower wildflower mix , or raging cornflower seeds .

However , you’re able to also view opting for one of the named cultivar for different forms or different chromaticity .

Some options to turn over admit :

A range of shade from deep , dark purple to lilac , atomic number 83 - coloring material and livid .

DwarfC. cyanuswith blue bloom , perfect for the front of mete or containers .