Grow a True Blue Garden With These Gorgeous Blue-Hued Plants

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Blue is a calming colour in the garden. It can range from serene to vibrant, but it is always inviting. Blue gardens can be inspired by every colour of the blue spectrum in nature that can be imagined. This guide will help you find the best  blue plants for your garden that you can use to decorate containers, garden beds or an entire landscape.
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Right Plant, Right Place

The first rule in choosing any plants for your garden is to look for the right plants for your soil and growing conditions. A good way to ensure you are choosing the proper plants is to buy them from a reputable source, such as those in your home country or gardening zone.
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Soil Acidity

Next, test your soil with a  soil test kit. Did you know that soil acidity levels can change the colour of flower blooms? The most prominent example of this is with the Bigleaf Hydrangea ( Hydrangea  macrophylla) which has blue blooms in acidic soil and pink blooms in a less acidic soil. There are other flowers, like morning glories, that will respond to soil acidity by changing from blue to pink or vice versa. Ideally, you want a pH of 5.0 to 5.5 to maintain the bluest colour in your Bigleaf Hydrangeas.
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Conditions Are Key

Plants need to be placed in the proper amount of sun or shade to perform best in the garden. They also have a preference for drainage. Some like fast draining soil that keeps roots dry; others like to have rich, moist soil to draw in water whenever they please.  

Of course, this is a basic standard for any garden plant. You can find the specific conditions on plant labels or in a good gardening resource book. But if you try to go blue in less than ideal conditions, it can affect the plant's colour. For instance, plant a Giant  Blue Hosta in full sun and it won’t be blue for long! Direct sun breaks down the glaucous coating (called leaf bloom) and turns the leaves to green. Keep your blue hosta in a nice shady spot and it will keep its cool and colour. 
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Ready To Start Planning Your Blue Garden?

Here is a list of the bulbs, flowers, foliage, shrubs and trees to get you started. 
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Blue Bulbs

  • Agapanthus
  • Anemone coronaria
  • Hyacinthus orientalis
  • Ipheion uniflorum (Spring Starflower)
  • Muscari aucheri (Blue Grape Hyacinth)
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Blue Flowers

  • Brunnera
  • Campanula
  • Centaurea Montana
  • Clematis
  • Delphinium   
  • Eryngium (Sea Holly)
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  • Evolvulus (Morning Glory ‘Blue Daze’ and ‘Heavenly Blue’)
  • Geranium ‘Johnson’s Blue'
  • Iris versicolor (Blue Flag Iris)
  • Linum lewisii (Blue Flax)
  • Lobelia erinus ‘Lobeto’
  • Meconopsis betonicifolia (Himalayan Blue Poppy)
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  • Myosotis (Forget-Me-Nots)
  • Nigella
  • Salvia
  • Scabiosa atropurpurea 'Florist's Blue'
  • Scutellaria
  • Viola
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Blue Foliage

  • Agave
  • Brassica oleracea 'Lacinato' (Tuscan Kale)
  • Eryngium (Sea Holly)
  • Euphorbia
  • Hosta
  • Lavandula (Lavender)
  • Sedum
  • Yucca
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Blue Shrubs And Trees

  • Abies procera (Noble Fir)
  • Ceanothus 'Frosty blue' (California Lilac)
  • Cyanococcus (Blueberry Bush)
  • Eucalyptus
  • Hydrangea
  • Juniperus (Juniper)
  • Picea pungens (Blue Spruce)
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Written by:  garden_therapy
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