Himalayan knotweed 'JS Caliente' 3L

Himalayan knotweed 'JS Caliente' – Fiery Accent in the Garden

Himalayan knotweed 'JS Caliente' (Persicaria amplexicaulis 'JS Caliente') is a unique variety, distinguished by intense red, slender inflorescences that add dynamism and elegance to the borders throughout summer and autumn. This fast-growing, easy-to-grow perennial forms dense clumps of decorative green leaves, which are the perfect backdrop for vibrant flowers. Ideal for naturalistic gardens, it attracts pollinators and is suitable for planting in large groups.

Main characteristics of Himalayan knotweed 'JS Caliente'

Flowers

• Colour: Intense, fiery red.
• Shape: Slender, spike-shaped inflorescences hovering above the leaves.
• Flowering period: June–October, guaranteeing a long-lasting decorative effect.
• Decorativeness: The flowers float on thin but strong stems, waving in the wind.

List

• Colour: Dark green, large, elliptical, densely set on stems.
• Seasonality: Semi-evergreen – in warmer climates, they can retain some of their leaves over the winter.
• Decorativeness: They form lush clumps that add structure and contrast to the beds.

Cut

• Form: An erect, tufted perennial with a loose, elegant habit.
• Height: It reaches 80–100 cm, with flowers floating above the leaves.
• Width: It grows 60–90 cm, forming dense clumps.

Cultivation requirements of Himalayan knotweed 'JS Caliente'

Location and soil

• Position: Full sun or partial shade – the more sun, the more intense the flowering.
• Soil: Fertile, well-drained, moist, but not waterlogged; preferably with a slightly acidic to neutral pH.
• Humidity: It tolerates moderate humidity well, but also copes well with slightly drier conditions after rooting.

Watering and fertilizing

• Watering: Regular in the first year after planting; older plants are more drought tolerant.
• Fertilization: In spring, it is worth using an organic or compound fertilizer for perennials.

Care

• Trimming: After flowering, you can remove faded inflorescences for aesthetics and possible reflowering.
• Reproduction: The easiest way is to divide the clumps in early spring or autumn.
• Wintering: Fully frost resistant (zone 4–8), does not require additional protection for the winter.

Plant specifications

• Flower pot: 3 liters
• Age: 2 years old
  
• Frost resistance: Yes