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Dicliptera squarrosa - Tree Fern

Dicliptera squarrosa
Dicliptéra, Jacobinia

5,0/5
1 reviews
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A very pretty plant that withstands drought well right from the first year. It should fill out quickly, and I hope it will continue to do so year after year. Just be careful of snails and slugs—they love young shoots.

Françoise , 04/08/2025

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This plant carries a 12 months recovery warranty

More information

Perennial bushy and floriferous, preferring sun and dry soil. From summer to frost, it is adorned with numerous tubular flowers of a vibrant orange-red shade. Its foliage, composed of lanceolate, matte leaves which are silver-green in colour, with a soft and velvety texture, is evergreen until -4° to -5° C. The plant slowly spreads through its suckering stump to form a dense groundcover. Ideal for rock gardens, mixed borders, and pots, it is one of the best perennials for dry gardens in not-too-cold climates.
Flower size
5 cm
Height at maturity
45 cm
Spread at maturity
50 cm
Exposure
Sun
Hardiness
Hardy down to -6°C
Soil moisture
Dry soil
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Best planting time March, September
Recommended planting time February to April, September to October
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Flowering time June to October
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Description

Dicliptera suberecta (synonym Dicliptera squarrosa), also known as Justicia or Jacobinia suberecta, is an excellent perennial for sunny and dry areas, and is particularly floriferous. From summer to frost when summer blooms fade, it is adorned with numerous tubular flowers of a bright orange-red colour. Its small lanceolate, matte leaves, which are silver-green, with a soft and velvety texture, are hardy to -4°C (24.8°F) to -5°C (23°F). The stump, on the other hand, can withstand temperatures of about -10°C (14°F). The plant spreads slowly through its suckering stump, forming a dense groundcover. Ideal for rock gardens, in mixed borders, in pots, it is one of the best perennials for dry gardens, in not too cold climates. Its flamboyant flowering illuminates the garden, in contrast with the pale foliage.

Dicliptera suberecta belongs to the Acanthaceae family and is native to Uruguay. This shrubby perennial forms a rounded and spreading clump, 50 cm (20in) in diameter and 45 cm (18in) tall when in flower. The foliage consists of small lanceolate, opposite, velvety leaves, silver-green in colour, measuring 4 to 8 cm (2 to 3in) in length. The remarkably long flowering period lasts from June to October. The bright orange-red flowers form slender tubes, 3 to 6 cm (1 to 2in) long, with long stamens emerging from them. They are grouped in small clusters called corymbs. These flowers are carried by a long swollen pedicel that will transform into a pod filled with numerous very fine seeds. The plant completely disappears in winter in our climates, but is semi-evergreen in milder climates.

With its spectacular summer flowering, Dicliptera suberecta is essential in dry gardens. Perfect by the sea, it withstands sea spray and wind. A little further inland, in a rock garden or a heat-soaked bed, it manages to bloom during the difficult months. This perennial can be planted in beds with limestone loving garden plants: tall SedumsCistus,  Lavenders, Helichrysum italicum for example, or form a remarkably contrasting combination with the blue of Ceratostigma plumbaginoides.

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Dicliptera squarrosa - Tree Fern in pictures

Dicliptera squarrosa - Tree Fern (Flowering) Flowering
Dicliptera squarrosa - Tree Fern (Foliage) Foliage
Dicliptera squarrosa - Tree Fern (Plant habit) Plant habit

Flowering

Flower colour red
Flowering time June to October
Inflorescence Corymb
Flower size 5 cm

Foliage

Foliage persistence Deciduous
Foliage colour green

Plant habit

Height at maturity 45 cm
Spread at maturity 50 cm
Growth rate normal

Botanical data

Genus

Dicliptera

Species

squarrosa

Family

Acanthaceae

Other common names

Dicliptéra, Jacobinia

Origin

South America

Product reference182081

Planting and care

Plant Dicliptera suberecta in any well-drained, light, even rocky and limestone soil, in full sun. Some watering in summer, in case of prolonged drought, promotes flowering.

Planting period

Best planting time March, September
Recommended planting time February to April, September to October

Intended location

Suitable for Meadow, Rockery
Type of use Edge of border, Container, Conservatory
Hardiness Hardy down to -6°C (USDA zone 9a) Show map
Ease of cultivation Amateur
Planting density 7 per m2
Exposure Sun
Soil pH Any
Soil type Chalky (poor, alkaline and well-drained), Silty-loamy (rich and light), Stony (poor and well-drained)
Soil moisture Dry soil, Well-drained

Care

Pruning instructions After flowering, moderate pruning can encourage a second flowering. Before winter, it can withstand a more severe pruning. Clear the young plant of its dry stems in early spring when it starts growing from the stump.
Pruning Pruning recommended once a year
Pruning time February to April, November
Disease resistance Very good
Overwinter Can be left in the ground
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