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Agapanthus Blue Giant

Agapanthus Blue Giant
African Lily, Lily of the Nile

4,3/5
20 reviews
3 reviews
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Elisabeth, 08/05/2022

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This plant carries a 12 months recovery warranty

More information

The Blue Giant Agapanthus, a vigorous young plant with dark blue flowers.
Flower size
18 cm
Height at maturity
1.50 m
Spread at maturity
50 cm
Exposure
Sun
Hardiness
Hardy down to -9°C
Soil moisture
Dry soil, Moist soil
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Best planting time March to April
Recommended planting time March to June
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Flowering time July to August
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Description

This hardy perennial plant has fleshy roots and grows well in any fresh and deep soil, even in limestone soil. The soil must be well-drained in winter. To plant this species in heavy soil, dig a hole of 30 cm (11.8 in) in all directions, pour in pure sand, and install the stump without adding any soil. All the species and varieties of this plant have deciduous foliage. They are highly tolerant of cold weather, withstanding temperatures as low as -12°C / 10°F approximately. This makes them suitable for many regions. During very harsh winters, covering the stumps with straw or dead leaves is advisable. You can plant this species in the borders of flower beds alongside Crocosmias, Artemisias, and annual Rudbeckias or in the foreground of Ceanothuses, rock roses, Halimiums, Phlomis, etc.

This variety is derived from A. campanulatus, one of the most vigorous varieties. It produces large spikes of flowers in a bright, dark blue colour.

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Agapanthus Blue Giant in pictures

Agapanthus Blue Giant (Flowering) Flowering
Agapanthus Blue Giant (Foliage) Foliage
Agapanthus Blue Giant (Plant habit) Plant habit

Flowering

Flower colour blue
Flowering time July to August
Flower size 18 cm
Good for cut flowers Cut flower blooms

Foliage

Foliage persistence Deciduous
Foliage colour medium green

Plant habit

Height at maturity 1.50 m
Spread at maturity 50 cm
Growth rate slow

Botanical data

Genus

Agapanthus

Cultivar

Blue Giant

Family

Alliaceae - Liliaceae

Other common names

African Lily, Lily of the Nile

Product reference83204

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Planting and care

To ensure that your plants can withstand the cold, plant them by covering them with at least 10 cm (3.9 in) of good soil. It is best to plant them in spring and mulch them in winter. If you are growing them in a pot, use 5 young plants for a 24 cm (9.4 in) pot and protect your pots during winter. These plants prefer a rich, moist, and well-drained soil. Water them twice a week during the growth period, but avoid watering them afterwards. Keep in mind that they are sensitive to excessive moisture in winter.

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Planting period

Best planting time March to April
Recommended planting time March to June

Intended location

Suitable for Shaded rockery, Woodland edge, Undergrowth
Type of use Border, Container
Hardiness Hardy down to -9°C (USDA zone 8b) Show map
Ease of cultivation Amateur
Exposure Sun
Soil pH Neutral
Soil type Silty-loamy (rich and light), Stony (poor and well-drained)
Soil moisture Dry soil, Moist soil, sandy

Care

Pruning No pruning necessary
Disease resistance Very good
Overwinter Can be left in the ground
4,3/5

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