Siberian Flag Iris sibirica - 3L Pot
Siberian Flag Iris sibirica...
19.99 16.99
Siberian Flag Iris sibirica - 3x 9cm Pots
Siberian Flag Iris sibirica...
15.99 14.99
(2)
Blue Flowers
View all 10+
Blue Flowers
Pickerel Weed Pontederia Cordata Lanceolata - 1L Pot
Pickerel Weed Pontederia Cordata...
13.99 10.99
Pickerel Weed 'Lanceolata' Pontederia cordata 'Lanceolata' - 3L Pot
Pickerel Weed 'Lanceolata' Pontederia...
19.99 16.99
9cm Pots
View all 50+
9cm Pots
Reed Sweet-Grass Glyceria maxima - 3x 9cm Pot
Reed Sweet-Grass Glyceria maxima...
15.99 14.99
Plantain Lily Hosta Wide Brim - 1L Pot - Cut Back
Plantain Lily Hosta Wide Brim...
13.99 11.45
Blue Flag Iris versicolor - 3x 9cm Pots
Blue Flag Iris versicolor...
15.99 14.99
(3)
Autumn (Sep-Nov)
View all 50+
Autumn (Sep-Nov)
Allegheny Monkey Flower Mimulus ringens - 3L Pot
Allegheny Monkey Flower Mimulus...
19.99 16.99
Plantain Lily Hosta Fortunei Francee - 1L Pot - Cut Back
Plantain Lily Hosta Fortunei...
13.99 11.45
Brooklime Veronica Beccabunga - 3x 9cm Pots - Cut Back
Brooklime Veronica Beccabunga...
15.99 14.99
(3)
Blue Flag Iris versicolor - 1L Pot
Blue Flag Iris versicolor...
13.99 10.99
(2)
Marsh cinquefoil Potentilla palustris - 1L Pot - Cut Back
Marsh cinquefoil Potentilla...
13.99 10.99
Blue Cardinal Flower - Lobelia siphilitica - 1L Pot
Blue Cardinal Flower - Lobelia...
13.99 10.99
Dahlia 'Blue Boy' - 1 Bulb
Dahlia 'Blue Boy' - 1 Bulb
1.99
New
4m Climbing Plant Pole
4m Climbing Plant Pole
75.99 65.99
Swipe for more

Blue Cardinal Flower - Lobelia siphilitica - 3x 9cm Pots

Code: PL0711
Blue Cardinal Flower - Lobelia siphilitica - 3x 9cm Pots
Blue Cardinal Flower - Lobelia siphilitica - 3x 9cm Pots

The Blue Cardinal Flower is a clump-forming perennial with upright leafy stems. It bears dense spikes of light to bright blue tubular, two-lipped flowers from summer through until autumn. It thrives in moist conditions, so it is a great plant for a bog or waterside location.

Characteristics

  • Foliage Colour: light green in spring, summer and autumn
  • Flower Colour: blue in summer and autumn
  • Approx. Growth Height: 70cm
  • Max. Spread: 40cm
  • Flowering Time: summer and autumn
  • Planting Time: spring
  • Uses: in ponds, bog gardens, wildflower gardens
  • Exposure: sheltered
  • Growing Habit: clump-forming, erect
  • Hardiness: hardy
  • Rate of Growth: max. height in 2-5 years

Requirements

  • Light Requirements: partial shade, full sun
  • Moisture: poorly drained or moist but well drained
  • Soil requirements: acidic, neutral, alkaline, chalky, loamy, sandy, clay

Planting

Plant in deep, fertile, permanently moist soil in a full sun or partial shade location. Suitable for edging, near water, or in a mixed or herbaceous border.

Caring and Maintenance

This is a very hardy, low maintenance plant. Water adequately during dry and hot periods. Optionally, fertilise every two weeks in spring and early summer to improve flowering. Plants may be trimmed as they die back in particularly hot summers.

 

A selection of our products

 
1 to 6 (of 6 products)    View all       List List List  1