Perovskia Blue Spire 2

Perovskia Blue Spire

Russian Sage

£9.99
2226
6 item(s)
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At a Glance

Perovskia 'Blue Spire' - Russian Sage

Overview

Perovskia 'Blue Spire', commonly known as Russian Sage, is a stunning perennial that brings months of ethereal beauty to any garden. This hardy, drought-tolerant plant produces clouds of tiny lavender-blue flowers above silvery-grey foliage, creating a soft, misty appearance that's beloved by gardeners and pollinators alike.

 

Plant Characteristics

Size and Growth Habit

  • Height: 1.0-1.5cm 

  • Spread: 0.5-1.0m 

  • Growth habit: Upright, bushy perennial with woody stems at the base

Foliage

  • Colour: Striking silvery-grey to white

  • Texture: Finely cut, aromatic leaves with a soft, downy feel

  • Fragrance: Pleasant, sage-like scent when crushed

Flowers

  • Colour: Soft lavender-blue tubular flowers

  • Bloom time: July through October

  • Flower form: Tiny blooms clustered on tall, branching spikes

  • Pollinator appeal: Excellent for bees, butterflies, and other beneficial insects

 

Growing Conditions

Sunlight Requirements

Full sun (6+ hours daily) - essential for best flowering and compact growth

Soil Preferences

  • Type: Well-draining soil is crucial

  • pH: Neutral to slightly alkaline (6.5-8.0)

  • Tolerance: Adapts to poor, sandy, or rocky soils

  • Drainage: Must have excellent drainage - will not tolerate waterlogged conditions

Watering Needs

  • Established plants: Extremely drought-tolerant

  • New plantings: Water regularly during first growing season

  • Maintenance: Once established, rarely needs supplemental watering

Climate Tolerance

  • Hardiness: RHS H5 (Hardy to -15°C to -10°C)

  • Heat tolerance: Excellent - thrives in hot, dry conditions

  • Wind resistance: Good - sturdy stems rarely need staking

 

Garden Uses

Design Applications

  • Mixed borders: Excellent middle to back-of-border plant

  • Cottage gardens: Perfect for informal, naturalistic plantings

  • Gravel gardens: Ideal for Mediterranean-style landscapes

  • Prairie gardens: Complements ornamental grasses beautifully

 

Companion Plants

  • Lavender (Lavandula)

  • Ornamental grasses (Stipa, Festuca)

  • Echinacea (Purple Coneflower)

  • Sedum varieties

  • Achillea (Yarrow)

  • Salvia species

 

Care and Maintenance

Planting

  • Best time: Spring or early autumn

  • Spacing: Plant 60cm apart

  • Soil preparation: Improve heavy clay with grit or compost for drainage

Pruning

  • When: Late winter or early spring (February-March)

  • How: Cut back hard to 15-20cm from ground level

  • Benefits: Maintains compact shape and encourages vigorous new growth

Feeding

  • Requirements: Very low - avoid rich soils which cause floppy growth

  • Application: Light application of general fertiliser in spring if needed

Winter Care

  • Leave seed heads for winter interest and wildlife

  • Mulch crown lightly in exposed locations

  • Cut back in late winter before new growth begins

 

Benefits and Features

Wildlife Value

  • Excellent nectar source for bees and butterflies

  • Late-season blooms provide crucial autumn food for pollinators

  • Seeds attract finches and other small birds

Low Maintenance Appeal

  • Drought-tolerant once established

  • Rarely troubled by pests or diseases

  • Deer and rabbit resistant

  • Long flowering period with minimal care

Year-Round Interest

  • Summer: Months of soft blue flowers

  • Autumn: Attractive seed heads

  • Winter: Architectural bare stems

  • Spring: Fresh silvery foliage emergence

 

Potential Challenges

  • Wet soils: Cannot tolerate poor drainage - may cause root rot

  • Rich soils: Can become floppy and require staking

  • Shade: Becomes leggy with poor flowering in insufficient light

  • Late emergence: Don't panic if slow to appear in spring - this is normal

 

Summary

Perovskia 'Blue Spire' is an outstanding choice for gardeners seeking a beautiful, low-maintenance perennial that thrives in challenging conditions. Its combination of gorgeous flowers, attractive foliage, and excellent drought tolerance makes it invaluable in modern gardens, particularly as we face increasingly unpredictable weather patterns. Perfect for both novice and experienced gardeners, this reliable performer will reward you with months of colour and countless visiting pollinators.

Buying Shrubs from Jacksons Nurseries

At Jacksons Nurseries we sell a variety of shrubs both evergreen and deciduous with a variety of flowering times throughout the year. At certain times of the year our shrubs you buy from us may not look like the images shown on our website when deciduous leaves have fallen, the shrub has finished flowering or has been trimmed back.

Some leaves on evergreen shrubs can be damaged in winter by frost or harsh winds but in spring new leaves will readily replace those damaged. This is quite normal on many evergreen varieties and is preferable to plants grown with excessive protection that show cold shock once planted out and establish less satisfactory initially.

Availability: Stock availability figures are provided as a guide only. There is a delay between orders being placed and the plants being gathered by our pulling team. During this time it may be possible for a member of the public to purchase these plants from our Garden Centre, while this is rare it is a possibility and we will notify you of any problems as soon as possible. This figure may also include plants that have not yet be flagged as unsaleable.

Pre-order: Pre-order times are given as a guide only and may vary dependent on the growing season. Orders containing Pre-ordered products will be shipped as a single order when all items become available. Large orders may be part shipped, please contact us on 01782 502741 or email sales@jacksonsnurseries.co.uk.

* Please Note: Shrubs in 20 litre pots and above might require a pallet delivery starting at £79.99 per pallet. Depending on the exact pot size and height it may be possible to get approximately 5 plants per pallet at no extra cost. The maximum height we can dispatch on a pallet is 2.0m, this includes the height of the pallet and pot.

Shrubs are deciduous or evergreen woody plants, and often provide fragrant flowers, berries and foliage. They are good for structural framework, and they can provide a wonderful shelter and food source for wildlife.

Planting and Conditions

Container grown shrubs can be grown at any time of year. It is a little known fact that shrubs planted in the autumn and winter will be easier to look after than those planted in the spring and summer, because they will have time to establish and become hardy in the cooler months.

Plant the shrub at the same depth as it was in its original pot. Planting too deeply can result in root and stem rot.

One of the biggest causes of death in new shrubs is drought stress, so keep it well watered until it’s established.

Make sure you loosen the soil prior to planting. Most shrubs are tolerant of most soil types as long as it is fairly well draining.

Most shrubs will grow happily in containers, but they will be much more demanding on feeding and watering than shrubs in the ground would be. They will also need potting on every couple of years so that they don’t suffocate or become stunted in their pot.

Aftercare and Pruning

Once established, shrubs generally do not require much water. However, at first they need careful, frequent watering and should not be left to dry out.

Shrubs in the ground are generally not demanding and in most cases, annual feeding with general purpose fertilizer will suffice. Shrubs in containers may need more feeding; usually from early spring until late summer.

Shrubs also benefit from mulching in order to supress weeds, conserve moisture and provide vital nutrients. Mulch also greatly improves soil conditions. Shrubs can be mulched in late winter, after fertiliser has been applied, but it can be mulched through autumn to late spring as long as the ground is damp.

All shrubs benefit from dead-heading once spent flowers become apparent. Rhododendrons and Lilac especially benefit from the removal of dead flowers.

Some shrubs may show signs of reverted growth or ‘sporting’. This is where random shoots of different leaves associated with the plant’s parentage begin to appear. Most commonly this is where plants with variegated leaves sprout pure green growths instead of variegated ones.

To control reversion, remove reverted shoots promptly to discourage them. Reverted shoots are usually much more vigorous than the variegated ones, and thus should be completely pruned out and cut back into wood containing variegated foliage.

Potential Issues

Although shrubs are usually very robust garden plants, they can sometimes start to decline with no apparent or obvious reason.

This will start with browning leaves, which could indicate plant stress due to lack of water or waterlogging, an establishment failure or, in the worst case scenario, honey fungus. Another cause of leaf browning is a high salt content in the soil. This could be a natural occurrence, especially if you live near the ocean, or it could be from over fertilisation.

To remedy a high salt content, cut back on fertiliser and step up your watering regime for the next few weeks. If you live by the ocean, this will be harder to remedy—but stepping up your watering will help to wash some of the salt away all the same. 

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Perovskia Blue Spire 2 2-3 Litre pot
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