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Blues

Aconitum napellus ‘Newry Blue’

Aconitum napellus ‘Newry Blue’ is an outstanding old Irish cultivar with wonderful upright spires of the deepest rich blue that tower over the back of the border. Known for its dense spires, they are every bit as dramatic as you could hope for them to be.

Agapanthus africanus Blue

The Agapanthus or Blue African Lily is one of the aristocrats of the late summer garden. Requiring only the minimum of care, the exotic combination of graceful foliage and stunning flowers is equally impressive in the border or large planter. This is a lovely plant to grow and they are very easy from seed.

Agapanthus comptonii ‘Headbourne Hybrids’

Agapanthus praecox ssp. minimus ‘Peter Pan’

The Agapanthus is one of the aristocrats of the late summer garden. ‘Peter Pan Blue’ is a fine dwarf hybrid with neat clumps of leaves and large clusters of light- blue flowerheads. The exotic combination of graceful foliage and stunning flowers is equally impressive in the border or container.

Agastache foeniculum

Agastache foeniculum is a perennial herb that tastes as good as it looks and are as popular in the border as they are in the herb garden. They are excellent design plants, exhibiting a strong vertical accent for the perennial border. Bees hold an undisputed attraction for the flowers, the colour, shape and copious amounts of nectar are among their favourites. This is perhaps one of the most gratifying plants you can grow.

Agastache foeniculum ‘Golden Jubilee’

Agastache ‘Golden Jubilee’ has one of the most remarkable leaf colour of any plant. This bright gold-chartreuse beauty offers late season punctuation and purple bottle-brush flowers which are a powerhouse source of nectar and pollen for bees, butterflies and other beneficial insects.

Agastache foeniculum, Organic

Agastache hybrida ‘Astello Indigo’

Agastache ‘Astello Indigo’ is just about the most exciting breakthrough yet and it’s got the award to prove it – Europe’s coveted Fleuroselect Gold Medal. Compact and quick growing, they flower in the first year from seed with fabulous, upright spikes that are fully covered with deep indigo-blue flowers. The masses of fragrant blooms throughout the summer are ideal for cutting. They produce copious amounts of nectar for bees and butterflies to feast upon.

Ajuga genevensis

Ajuga genevensis is used throughout the world yet this relatively uncommon form is less well known. This very well behaved, evergreen groundcover has deep gentian blue flower spikes and is by far the showiest of the species. It is often the plant of choice for smaller areas or along edges and pathways.

Ajuga reptans

For most of the year Ajuga is a pleasant, quiet achiever, a very versatile low growing ground cover, with evergreen, rosette-like foliage that hugs the ground like an evergreen carpet but those weeks in spring when the blue flowers appear are simply quite magical.

Amsonia hubrichtii

Amsonia hubrichtii provides three seasons of interest. It comes into bloom around the second week of May, the flowers have an almost lily-like appearance, but it is in autumn when it reaches its true glory when the leaves and stems turn a brilliant gold to amber.

Amsonia illustris

Amsonia illustris is perhaps the boldest of the Amsonias, a little taller and showier with shiny green leaves and larger blue flowers. They flower reliably year after year, are not fussy about soil or situation and are very hardy. The foliage stays green through summer and turns a brilliant gold in the autumn. This is an extraordinary long lived designer perennial that deserves wider use.

Anchusa capensis ‘Blue Angel’

Perfect for any sunny spot that needs a burst of colour. Anchusa capensis ‘Blue Angel’ is prized for its long blooming flowers. The brilliant clusters of intense cobalt blue flowers will brighten up any space. Team with other annuals and perennials for eye-popping combinations.

Anchusa italica ‘Dropmore’

Anchusa italica is a wonderfully statuesque plant with vibrant, gentian blue flowers, dense foliage and lance shaped mid green leaves. ‘Dropmore’ is a 1905 selection that is still available today. They will thrive in a sunny border and make a great companion to rich plums and purple tones.

Blues Aconitum napellus ‘Newry Blue’ Aconitum napellus ‘Newry Blue’ is an outstanding old Irish cultivar with wonderful upright spires of the deepest rich blue that tower over the back of the

Blue Cardinal Flower Seeds

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USDA Hardiness Planting Zones

To determine if a plant is sufficiently cold hardy, the USDA created numbered zones indicating winter low temperatures; the lower the zone number the colder the winter.

  • If the coldest winter temperature expected in your area is -15°F (zone 5) then any plants rated zones 3-5 will survive the winter temperatures in your area.
  • If you live in very warm winter areas (zones 9-11) plants with zones 3-4 ratings are not recommended. The lack of freezing winter temperatures do not provide a time for winter dormancy (rest).

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Further Reading:

  • Wildflower Seed Planting Instructions
  • Safe Seed Pledge
  • The Wildflowers of the Northeast
  • FAQs About Wildflowers and Wildflower Meadows
  • How much seed do I need?
  • Late Fall and Winter Planting Times
  • View All Wildflower Planting Guides

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This beauty is often called "Blue Cardinal Flower" since it is often planted with its famous red cousin. Easy. Perennial