Caryopteris Incana 'Sunshine Blue' - Marshalls Garden - Sunshine Blue

Caryopteris incana 'Sunshine Blue' is a colourful deciduous shrub with golden-yellow foliage and s...

Currently unavailable

Currently out of stock

This product is not available at the moment. Check back later or explore other options below.

Product Information

Full details

The Caryopteris Incana 'Sunshine Blue' is a vibrant deciduous shrub ideal for gardeners seeking to add late-season colour and attract pollinators. Its standout feature is the striking combination of golden-yellow foliage and bright deep blue flowers. A key benefit is its long-lasting blooms which provide vivid colour. One caveat is its need for full sun to thrive and maintain foliage colour.

All features

Model Part NumberSunshine Blue
BrandMarshalls Garden

Extended Product Information

FAQs

When is the best time to plant Caryopteris 'Sunshine Blue'?

The best times to plant are in early spring or early autumn, allowing the plant to establish its roots before extreme weather.

How often should I water my 'Sunshine Blue'?

Water regularly during the first year. Once established, it is drought tolerant and only needs watering during extended dry periods.

Does 'Sunshine Blue' need winter protection?

In milder climates, it typically overwinters well. In very cold regions (Zone 5 or colder), providing a layer of mulch around the base in winter can offer protection.

What can I plant next to Caryopteris 'Sunshine Blue'?

Companion plants that thrive in sun and well-drained soil, such as Lavender, Sedum, ornamental grasses, or early-blooming perennials like Coreopsis, work well.

How tall does Caryopteris 'Sunshine Blue' grow?

Typically, it grows to a height and spread of around 3-4 feet (approx. 90-120 cm).

Why are the leaves not as yellow as expected?

Insufficient sunlight is the most common reason for reduced yellowing of foliage. Ensure the plant is in a full sun location.

Troubleshooting

Yellowing leaves with no blue flowers

Ensure the plant receives full sun. Insufficient sunlight can lead to dull foliage and reduced flowering. Also, check for waterlogged soil, which can cause stress.

Plant wilting despite watering

Verify soil drainage. The plant is drought tolerant but susceptible to root rot in constantly wet soil. Ensure the planting site is not waterlogged.

Leggy growth with sparse flowers

Prune the shrub back harder in early spring. Leggy growth often indicates a need for rejuvenation pruning to encourage denser flowering stems.

Leaves turning brown or scorched

This can be caused by intense sun combined with lack of water, or by frost damage. Ensure consistent watering during hot periods and protect from late frosts if possible.

Pros and Cons

Pros

  • Provides vibrant late-season colour with blue flowers.
  • Golden-yellow foliage offers visual interest throughout the growing season.
  • Attracts beneficial pollinators to the garden.
  • Drought tolerant once established.
  • Relatively low maintenance requirements.

Cons

  • Requires full sun exposure for best flowering and foliage colour.
  • Can be susceptible to root rot in waterlogged soil.
  • May require protection in very cold climates.
  • Best flowering and foliage colour is achieved in well-drained soil.
  • Blooms primarily in late summer, offering less colour earlier in the season.

Setup, Compatibility & Care

Planting:

  1. Select a location with full sun exposure (at least 6 hours daily).
  2. Ensure the soil is well-drained; amend heavy clay soils with compost or grit.
  3. Dig a hole twice the width of the root ball and plant the shrub so the top of the root ball is level with the soil surface.
  4. Water thoroughly after planting.

Care:

  • Watering: Water regularly during the first growing season to establish the plant. Once established, it is drought tolerant and requires watering only during prolonged dry spells.
  • Pruning: Prune in early spring before new growth begins. Cut back flowering stems from the previous year by about half to two-thirds to encourage new growth and abundant flowering. Remove any dead or damaged wood.
  • Soil: Prefers well-drained, moderately fertile soil. Tolerates poor soils but avoids waterlogged conditions.
  • Fertilizing: Generally, no feeding is required, especially in fertile soils. Over-fertilizing can lead to excessive leafy growth at the expense of flowers.

Compatibility:

This shrub is compatible with most common garden perennials, shrubs, and groundcovers that also thrive in sunny, well-drained conditions. It is an excellent companion for plants that bloom earlier in the season, providing a succession of colour. It is suitable for use in garden borders, rock gardens, and containers.