Horticulture Magazine

16 Agapanthus Varieties To Grow

purple agapanthus blooming in the garden

Agapanthus can be great options for a container garden, or for filling gaps with beautiful blooms in a sunny, sheltered and free-draining border.

But which variety should you grow?

Below, we list some of the excellent options to consider – all of which (except A. ‘Peter Pan’) have been given an RHS Award of Garden Merit, with their hardiness rating.

Read on to discover just some of the great Agapanthus varieties that you might consider:

1) ‘Arctic Star’

violet and white flowers of agapanthus arctic star
  • HARDINESS RATING: H4
  • USUAL HEIGHT: 80CM

Arctic Star grows to a height of around 80cm, with a 50cm spread.

It flowers in July and August, and has creamy buds that open to pale blue/white blooms.

These contrast well with greyish green foliage.

2) Fireworks

purple and white fireworks flowers
  • HARDINESS RATING: H3
  • USUAL HEIGHT: 60CM

Fireworks grows to around 60cm tall.

It is an evergreen type of Agapanthus, which bears round umbels of upright white buds which open to reveal trumpet-shaped blooms with purple-blue bases and white, flaring petal tips.

3) ‘Midnight Star’

blue and white midnight star agapanthus blooms
  • HARDINESS RATING: H5
  • USUAL HEIGHT: 50-100CM

If you are looking for a hardier, deciduous Agapanthus with deeper blue flowers then this is an excellent choice.

The deep blue-hued blooms on this cultivar are born from mid to late summer, at a height of between 50cm and 1m.

4) ‘Hoyland Blue’

A. 'Hoyland Blue' flowers
  • HARDINESS RATING: H3/H4
  • USUAL HEIGHT: 75CM

Another evergreen type, Hoyland Blue grows to around 75cm tall.

It has broad, strap-shaped foliage above which the white to pale blue flowers tower from the late summer into autumn.

5) A. inapertus ‘Avalanche’

white blooms of Agapanthius inapertus ‘Avalanche’
  • HARDINESS RATING: H4
  • USUAL HEIGHT: 80CM

This herbaceous perennial grows up to around 80cm in height.

It has relatively upright foliage and its stiff stems are surmounted by dangling, tubular white flowers in late summer and early in the autumn.

6) ‘Twister’

buds of agapanthus twister
  • HARDINESS RATING: H4
  • USUAL HEIGHT: 50CM

This compact option grows only around 50cm tall.

The trumpet-shaped blooms are a deep blue-purple at the base, with white tips which flare outwards.

It is also sometimes referred to as ‘Indigo Frost’.

7) ‘Loch Hope’

A. 'Loch Hope' flowers with violet and white stripes
  • HARDINESS RATING: H5
  • USUAL HEIGHT: 120CM

A hardier option, Loch Hope is another good deciduous Agapanthus to consider.

It grows a little taller than options discussed thus far, to a height of around 1.2m.

It has beautiful deep blue flowers.

8) ‘Northern Star’

purple hues of Northern Star
  • HARDINESS RATING: H4
  • USUAL HEIGHT: 80-100CM

This is another great choice if you love including plenty of blue and purple hues in your garden.

Northern Star grows up to around a metre in height, and its flowers are a deep violet-blue, with delicate purple stripes down the centre of each petal.

9) ‘Peter Franklin’

bee harvesting pollen from white blooms of A. 'Peter Franklin'
  • HARDINESS RATING: H3
  • USUAL HEIGHT: 150CM

A tall and dramatic Agapanthus, the stems on this plant can soar up to around 1.5m in height.

This is another more tender evergreen option.

The flowers on their large round umbels are a pure and pristine white.

10) ‘Royal Blue’

Small violet-blue flowers of agapanthus royal blue
  • HARDINESS RATING: H4
  • USUAL HEIGHT: 75CM

With bell-shaped flowers of a vibrant violet-blue, this is another deciduous Agapanthus to consider.

The flowers are born in late summer, and grow to a height of around 75cm.

11) ‘Snow Cloud’

a wasp anding on white flowers of Snow Cloud agapanthus
  • HARDINESS RATING: H4
  • USUAL HEIGHT: 120CM

With the synonym ‘Fragrant Snow’, this Agapanthus lives up to its names, bearing beautiful loose balls of snowy white flowers in the summer months.

The erect stems on this cultivar can grow to a height of around 1.2m.

12) ‘Purple Delight’

Agapanthus purple delight blooming in a large garden setting
  • HARDINESS RATING: H3
  • USUAL HEIGHT: 90CM

The name rather gives it away – the flowers of this variety of Agapanthus are indeed a lovely purple hue.

The purple funnel-shaped flowers in their rounded umbels appear from mid-summer to early autumn.

Their stems grow to a height of around 90cm.

13) ‘Peter Pan’

A. 'Peter Pan' with violet petals and yellow stamen
  • HARDINESS RATING: H4
  • USUAL HEIGHT: 50CM

This is a dwarf agapanthus that will grow to a maximum of half a metre.

This variety has beautiful lilac and white striped flowers and contrasting yellow stamen which will stand out in any garden.

This is the only type of agapanthus on our list which has not received the RHS AGM.

14) ‘Flower of Love’

  • HARDINESS RATING: H4
  • USUAL HEIGHT: 50CM

This compact deciduous Agapanthus has lovely deep blue flowers, born on upright stems that grow to around 50cm tall.

This Agapanthus is in bloom through the summer months.

15) ‘Jacaranda’

  • HARDINESS RATING: H4
  • USUAL HEIGHT: 90CM

This is an evergreen Agapanthus with purple-blue flowers, with deeper stripes down the heart of each petal.

This is an earlier flowering type, and bears its flowers on 90cm high stems between June and August.

16) ‘Royal Velvet’

  • HARDINESS RATING: H4
  • USUAL HEIGHT: 75CM

This Agapanthus, A. praecox subsp. Orientalis, ‘Royal Velvet’, grows to a height of around 75cm.

The rounded flower heads are a deep purple, with a darker central stripe down each one.

There is also a purple tinge around the base of the leaves and flower stems.

Key Considerations

When choosing an Agapanthus, the first thing to consider is the hardiness of the variety you are considering.

Hardiness

Some can overwinter outdoors with some protection, while others are definitely more tender and will usually need to be brought undercover into an unheated greenhouse for the winter months.

They range from half-hardy (H3), requiring a very mild winter or an unheated greenhouse to H5 (hardy through most of the UK even during extreme winters).

Deciduous types are generally more hardy, and evergreens more tender, but hardiness rating can vary even within each of these two categories.

Colour

Of course, another key consideration will be colour.

Many Agapanthus are in shades of purple-blue, but there are white options.

And some have bi-coloured flowers.

Height

Some larger, taller agapanthus will work best in a border, while more compact options are often better choices for containers.

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