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Patrinia monandra

Patrinia monandra

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A tall, fast-growing perennial, reaching 1.20m (4ft) when in flower, which offers from the second year of cultivation numerous umbels of delicate, chartreuse yellow flowers, from July to September. The floral heads remain decorative once the seeds have formed. This beautiful field of plants thrives in a rich, moist to wet soil, in full sun or partial shade. Easy to combine with many plants, it occasionally self-seeds here and there in the garden.
Flower size
20 cm
Height at maturity
1.20 m
Spread at maturity
40 cm
Exposure
Sun, Partial shade
Hardiness
Hardy down to -20°C
Soil moisture
Moist soil
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Best planting time March, October
Recommended planting time February to April, September to November
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Flowering time July to September
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Description

Patrinia monandra (synonym P. formosana) is a large perennial native to Asia that deserves to be planted more in gardens. Combining robustness and generosity, this beautiful plant also has a very natural charm, making it easy to associate with many other flowers in the garden. Its long summer flowering, composed of multiple umbels of pale yellowish-green flowers, remains decorative even when the seeds are forming. Hardy and easy to grow in a good, moist garden soil, it brings verticality and lightness to flower and shrub beds, in partial shade or in full sun.

 

Patrinia monandra is widespread in many Chinese provinces, Taiwan, and the Indian region of Bhutan, where it can be found on grassy slopes, in thickets, deciduous forests, forest edges, and along roadsides, up to 3,100m (10000ft) altitude. It belongs to the Caprifoliaceae family and not Valerianaceae. It is a herbaceous plant with a perennial rootstock, short-lived, with both horizontal, oblique, and vertical taproots. Its vegetation emerges in spring, forming a bushy and compact tuft of leafy stems that reach an average height of 40cm (16in) with a diameter of 30cm (12in). The stems lignify at the base and bear leaves often divided into 2 or 3 pairs of segments, with a slightly swollen and toothed lamina. Flowering occurs from July to September. From the foliage emerge highly branched flower stems reaching 1.20m (4ft) in height, coloured brick-red. At the end of each branching, there is an inflorescence in corymbs measuring up to 25cm (10in) in diameter. It consists of tiny pale yellow-green flowers, very nectar-rich and honey-producing. The above-ground vegetation is deciduous and dries up in winter. This Patrinia monandra can self-seed, but young plants considered unwanted can be easily removed.

 

Patrinia monandra is planted in English-style or naturalistic, country or romantic flower beds, in garden soils that are rich and slightly moist in summer. It accompanies many other light perennials such as Buenos Aires Verbena, mulleins, Sanguisorba, Agastache, thistles, and of course, grasses (Panicum, Stipa, Eragrostis, small Miscanthus...). It also lightens the flowering of white, yellow, or orange perpetual roses. Its flowers, fresh or dried, can also be used in floral arrangements.

 

Flowering

Flower colour yellow
Flowering time July to September
Inflorescence Corymb
Flower size 20 cm
Bee-friendly Attracts pollinators
Good for cut flowers Cut flower blooms
Flowering description Delicate umbels of chartreuse yellow.

Foliage

Foliage persistence Deciduous
Foliage colour green
Foliage description Deciduous.

Plant habit

Height at maturity 1.20 m
Spread at maturity 40 cm
Growth rate fast

Botanical data

Genus

Patrinia

Species

monandra

Family

Caprifoliaceae (Valerianaceae)

Origin

China

Other Centranthus - Valerian

  1. Out of stock
    From €2.90 8/9 cm pot

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    From €2.90 8/9 cm pot

    Available in 2 sizes

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    Available in 2 sizes

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    Available in 2 sizes

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Planting and care

Patrinia monandra is a perfectly cold-resistant plant, which can be planted in full sun or partial shade. It thrives in ordinary garden soil that is well loosened, not too heavy, rather rich, and remains somewhat moist even in summer. Once well established, it requires very little maintenance, except for occasional watering during dry spells. It sometimes self-seeds without becoming invasive, and any unwanted young plants can be easily removed. Beware of attacks from slugs and snails, which can devour the young shoots and be fatal to the young plants.

Planting period

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

Intended location

Suitable for Meadow, Woodland edge
Type of use Border
Hardiness Hardy down to -20°C (USDA zone 6b) Show map
Ease of cultivation Amateur
Planting density 5 per m2
Exposure Sun, Partial shade
Soil pH Neutral
Soil type Silty-loamy (rich and light)
Soil moisture Moist soil, Ordinary soil, loose

Care

Pruning instructions Prune the dry vegetation at the end of winter.
Pruning Pruning recommended once a year
Pruning time March to April
Disease resistance Good
Overwinter Can be left in the ground

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