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Hardy perennial
Polygonaceae
Perennials
Knotweed 'Golden Arrow'
Persicaria amplexicaulis
Knotweed 'Golden Arrow': 91.5 cm high and 61 cm spread, partial sun exposure. Magenta flowers in June-October. Zone 4; choose soil compatible with its moisture needs.
- Exposure
- Partly cloudy
- Life cycle
- Hardy perennial
- Hardiness
- Zone 4
Discover the plant
Common nameKnotweed 'Golden Arrow'
FamilyPolygonaceae
GenusKnotweed
Speciesstem-clasping
CultivarFlèche d'Or
TypeHardy perennial
Botanical namePersicaria amplexicaulis
With Persicaria amplexicaulis 'Golden Arrow', the flowerbed welcomes a plant whose flowers display magenta tones. The foliage presents golden hues, to be highlighted among different textures. The usual flowering period is June-October. The clump reaches approximately 91.5 cm in height with a spread of 61 cm; use these dimensions to position the plant as ground cover and at the edge of beds. The leaf margins contribute to the contrast and deserve a visible spot from the pathway.
To plant Persicaria 'Golden Arrow', look for the following exposure: partial sun and suitable soil (humus-rich, retaining moisture during growth, without stagnant water around the collar). For Persicaria 'Golden Arrow', regularly check the soil around the root ball: it must remain fresh. Water at the base when the surface begins to dry and adjust watering according to rainfall; this exposure (partial sun) does not eliminate water needs. Keep 61 cm as a guideline between plants; this helps preserve their shape and access for care. The indicated hardiness level is zone 4, to be assessed according to your garden's conditions.
In a planting of Persicaria 'Golden Arrow', keep healthy foliage after flowering to allow the plant to continue its growth. Keep the collar clear and observe regrowth before removing damaged parts. For associations, consider daylilies, campanulas, and perennial geraniums in varieties with similar needs. The flowering period (June-October) and the spread of 61 cm will serve as benchmarks for arranging other plants around this plant.
Planting guide
From planting to establishment.
Spacing / density
24 in
Best planting time
Spring after the thaw or early autumn, allowing time for the roots to establish before the severe cold.
Growing method
Knotweed ‘Golden Arrow’: Spring after the thaw or early autumn, allowing time for the roots to establish before the severe cold. For Knotweed ‘Golden Arrow’, regularly check the soil around the root ball: it should remain moist. Water at the base when the surface begins to dry and adjust waterings according to rainfall; this exposure (partial sun) does not eliminate the need for water. Keep the collar clear and observe the recovery before removing damaged parts.
Soil and care
The right care,at the right time.
Care level
Regular maintenance
Watering
For ‘Golden Arrow’ Persicaria, regularly check the soil around the root ball: it should remain moist. Water at the base when the surface starts to dry, and adjust watering based on rainfall; this exposure (partial sun) does not eliminate its water needs.
Soil type
Humiferous, keeping its freshness during growth, without stagnant water around the collar
Fertilization
Fertilizer for flowering
Moisture
Regular coolness during growth
Seasonal care
Persicaria 'Golden Arrow': keep the foliage healthy after flowering to allow the plant to continue growing. During its flowering period (June-October), also monitor damaged stems and neighboring plants that could obscure the clump.
Container growing
A garden,within reach.
Recommended pot size
A stable, perforated container, significantly wider than the root ball; size to be adapted to the format sold and adult development.
To try out Persicaria 'Golden Arrow' in a container, choose a stable pot with drainage holes, suitable for the root ball and its future spread (61 cm). The substrate must remain moist; it will dry out faster than in the open ground. Plan for winter protection for the container depending on your climate.
Bloom and dimensions
Its place,in your garden.
Mature height
3 feet (91.5 cm)
Width / spread
24 inches (61 cm)
Flower color
Red
Foliage color
YELLOW
Foliage type
Deciduous in cold climates
Growth rate
Moderate
Growth habit
Creeping or groundcover
Fragrance
Not documented for this selection
Bloom period
June-October
Garden associations
In goodcompany.
Companion plants
Associations to consider for ‘Golden Arrow’ Knotweed: daylilies, bellflowers, perennial geraniums. Choose varieties that tolerate partial sun and comparable moisture; allow each clump its adult space.
Plants to avoid
Around Persicaria 'Golden Arrow', especially avoid neighbours that would cover its leaves or strongly compete with its root ball. Compatibility in terms of light, water, and spread takes precedence over a list of so-called enemy plants.
Frequently asked questions
Your questions,answered.
Where to plant 'Golden Arrow' Persicaria?
Expect partial sun and suitable soil (humus-rich, retaining moisture during growth, with no stagnant water around the crown). Keep the crown clear and observe new growth before removing damaged parts.
Where should I plant Persicaria 'Golden Arrow'?
Count on roughly 91.5 cm in height and 61 cm in width at maturity. Approximately 61 cm between centers, to be adjusted based on actual clump development. This spacing is suitable for use as groundcover and border planting.
When does 'Golden Arrow' knotweed bloom?
The indicated period is June-October. The flower palette is magenta. The exact date and duration depend on the climate, season, and plant establishment.
How to water and care for 'Golden Arrow' Knotweed?
For 'Golden Arrow' Persicaria, regularly check the soil around the root ball: it should remain moist. Water at the base when the surface begins to dry out and adjust the watering frequency based on rainfall; this exposure (partial sun) does not eliminate the need for water. Keep the foliage healthy after flowering to allow the plant to continue growing.
Can *Persicaria* 'Golden Arrow' be grown in a pot?
To try ‘Golden Arrow’ knotweed in a container, choose a stable pot with drainage holes, suitable for the root ball and its future size (61 cm). The substrate should remain moist; it will dry out faster than in the ground. Plan to protect the container in winter depending on your climate.
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