Call Jacksons Nurseries on 01782 502741  ORDER HOTLINE: 01782 502741

Home  Home
Buy Centaurea montana Grandiflora (Cornflower) online from Jacksons Nurseries
Buy Centaurea montana Grandiflora (Cornflower) online from Jacksons NurseriesBuy Centaurea montana Grandiflora (Cornflower) online from Jacksons Nurseries Buy Centaurea montana Grandiflora (Cornflower) online from Jacksons Nurseries

Centaurea montana 'Grandiflora' (2L)

Cornflower

£5.99

Beautiful, large, cornflower-like, deep violet-blue flower heads surrounded by papery, light purple bracts are produced above a compact, rounded mound of foliage from June to July. This is an easy-to-grow, clump forming, semi-evergreen perennial with elongated, textured, fresh mid-green leaves that provide a perfect foil for the summer flowers.

Ideal for planting in bold drifts throughout a wild garden, it also looks lovely when incorporated into a rock garden or grown in groups in a sunny border. Cut back flowering stems as soon as the summer flowers have faded to encourage a second flush of blooms during the autumn

Buying Perennials from Jacksons Nurseries

At Jacksons Nurseries we lightly trim back our perennials after flowering to ensure that the plants remain neat and tidy whilst in the pot. The more tender the plant the less we cut back to help protect exposed stems from winter frost. Depending on the plant variety we will then prune back further in spring once the risk of the more severe frosts is over.

As a result, depending on the time of year you buy perennials, they may not look like images showing their ‘prime time’ in flower and looking at their best.

From late autumn onwards and dependant on variety, there may be very little visible above the soil except for a few cut back dormant leaves or stems. It is perfectly normal for dormant plants to look like this from autumn onwards, they will however burst back into life in spring.

Please Note: Pre-order delivery dates are given as a guide only and may vary dependent on the growing season.

Orders containing Pre-Ordered products will be shipped as a single order when all items become available. Large orders may be part shipped, please contact us on 01782 502741 or email orders@jacksonsnurseries.co.uk.

Centaurea montana 'Grandiflora' (2L)

Beautiful, large, cornflower-like, deep violet-blue flower heads surrounded by papery, light purple bracts are produced above a compact, rounded mound of foliage from June to July. This is an easy-to-grow, clump forming, semi-evergreen perennial with elongated, textured, fresh mid-green leaves that provide a perfect foil for the summer flowers.

Ideal for planting in bold drifts throughout a wild garden, it also looks lovely when incorporated into a rock garden or grown in groups in a sunny border. Cut back flowering stems as soon as the summer flowers have faded to encourage a second flush of blooms during the autumn

 


 

Centaurea montana Grandiflora
Cornflower
Perennials
0.5m - 1m
0.5m - 1m
  • Purple
Summer
Deciduous
No
Average to fast
Fully Hardy
  • Full sun  Full sun
  • Partial shade  Partial shade
  • Moist Well-drained
  • Well-drained
  • Acid
  • Neutral
  • Alkaline
  • Chalk
  • Clay
  • Loam
  • Sand

Perennials are described and classified differently by different gardeners but all would agree that they are plants that come into flower every year from early spring to late summer, the exact time dependent on variety and most die back to ground level in autumn and winter.

As for all plants, soil preparation is time well spent. Dig over the area to be planted ensuring that the ground is free draining. If not then you may wish to either consider planting in a different spot or raising the level of the planting area by adding additional topsoil, well rotted garden compost and/or well rotted manure. Add ‘Fish, Blood and Bone’ fertiliser or a high potash fertiliser to encourage good root growth and development.

It’s always a good idea to plant a few of the same plant together, we recommend planting in 3’s or 5’s to provide a bold effect but allowing them plenty of room to develop.

Always check eventual plant heights when planning borders to ensure that the taller plants are at the back (or at the centre of an island bed) followed by the medium and then smaller low growing plants.

Remember to deadhead perennials after flowering, trim back lightly in autumn as required to tidy the border and if necessary trim again in spring once the risk of heavy frost has passed.

If perennials get too big, start to flower less and less or if it seems to be dying off from the centre, consider dividing the plant but always check that the particular variety is happy to be divided and that you divide at the right time of year for the plant.

By using this simple guide and a little time, perennials can make an absolutely spectacular difference to your garden.

Westland Gro-Sure All Purpose Plant Food

CODE: 6185

In stock
£3.99

Great all round feed for plants, vegetables and flowers in gardens and inside the home. Packed with nutrients for healthy flowers... More 

.


Westland Fish, Blood and Bone

CODE: 6193

In stock
£14.99

Ready to use Helps build soil fertility Encourages strong, healthy growth Increases crop yield Nutrient Content... More 

.


Westland Bonemeal Root Builder

CODE: 6194

OUT OF STOCK
Out-of-stock
£3.99

Westland Bonemeal is a natural, slow release, organic plant food that is ideal for trees and shrubs. It promotes strong and healthy rooting as well as... More 

.


Westland Water Saving Gel 250g

CODE: 6184

In stock
£4.99

This specially formulated water-retaining gel that has the capacity to hold 400 times its own weight in water. This water is absorbed and released... More 

.

Delphinium 'Black Knight' (2L)

CODE: 435

In stock
£5.99

One of the classic flowers of the traditional summer garden, this is a stunning, ornamental variety producing tall, upright spires laden with... More 

.


Aquilegia vulgaris var. stellata 'Blue Barlow' (2L)

CODE: 531

In stock
£5.99

Tall, upright perennial with fern-like grey/green leaves and violet-blue pompon-like fully double flowers. Looks very striking when planted amongst... More 

.


Monarda 'Prairie Night' (2L)

CODE: 484

OUT OF STOCK
Out-of-stock
£5.99

Whorls of spectacular, long-lasting, bright purple-lilac blooms are produced in crowded heads on branched flowering stems from July to September. This is... More 

.


Tricyrtis hirta 'Empress' (2L)

CODE: 618

In stock
£6.99

Tricyrtis hirta 'Empress' is a dwarf variety of Tricyrtis hirta. This unique perennial is perfect for adding a touch of the exotic to any shady... More 

.

Arabis caucasica 'Hedi' (9cm)

CODE: 87

OUT OF STOCK
Out-of-stock
£2.99

This is a small, mat-forming evergreen perennial which forms compact cushions of attractive, woolly, grey-green leaves and bears an abundance of stunning... More 

.


Astilbe x arendsii 'Fanal' (2L)

CODE: 425

In stock
£5.99

Elegant, self-supporting spikes of feathery, deep red flower heads are produced in early summer, fading to bronze as the autumn approaches but still... More 

.


Dianthus deltoides 'Flashing Lights' (9cm)

CODE: 8952

In stock
£2.99

Brilliant, upward-facing, flashing, bright red blooms with deep, carmine-red centres and a slightly darker outer edge are borne singly on tiny stems,... More 

.


Geranium 'Ann Folkard' (2L)

CODE: 446

In stock
£6.99

A beautiful perennial with black-eyed, magenta-purple flowers in summer and autumn. A deeply divided yellowish green leaves of a spreading nature, making... More 

.


Hemerocallis 'Pink Damask'

CODE: 455

In stock
£6.99

This is an outstanding, daylily bearing slender, branched stems of stunning, trumpet-shaped, deep pink blooms repeatedly from July to September. These... More 

.


Heuchera 'Lime Marmalade' (2L)

CODE: 509

In stock
£6.99

Unlike other lime heucheras, this will tolerate some morning sun but needs shade from the mid-day sun.  Much stronger habit than other lime colours.... More 

.


Crocosmia x crocosmiiflora 'Emily McKenzie' (2L)

CODE: 514

In stock
£5.99

Fiery, crimson red and orange, funnel-shaped flowers with orange-yellow throats flare out along arching, dark bronze-green stems between August and... More 

.


Agapanthus africanus 'Baby Blue' (2L)

CODE: 526

In stock
£7.99

Agapanthus Baby Blue is one of the smallest and most compact varieties of Agapanthus available. This semi-evergreen perennial bears rounded umbels of... More 

.

Add a Card and Message to your order

CODE: 12640

In stock
£1.50

Are you buying a gift for a loved one? If so, then why not add a personal message to your purchase. Simply enter your message in the box above and... More 

.

 
 
 

You might also like:

 

Subscribe to our newsletter for special deals and exclusive offers   Sign Up Now

Loading...