Product description
Caryopteris × clandonensis 'Grand Bleu', commonly known as Bluebeard 'Grand Bleu', is a compact deciduous shrub prized for its late summer to autumn display of deep blue flowers. The aromatic, dark green leaves provide a lush backdrop to the vibrant blooms, making it an excellent addition to mixed borders and wildlife gardens. Its dense, rounded habit ensures it remains neat and manageable, even in smaller garden spaces.
Thriving in full sun and well-drained soil, 'Grand Bleu' is well-suited for UK gardens. Its drought tolerance makes it a resilient choice for various garden settings, including coastal and city gardens. The shrub reaches an ultimate height and spread of about 100 cm, fitting well into cottage and informal garden designs.
Beyond its ornamental appeal, 'Grand Bleu' serves as a valuable resource for pollinators, with its nectar-rich flowers attracting bees and butterflies during the late season. To maintain its compact form and promote prolific blooming, it's advisable to prune the shrub back hard each spring. This low-maintenance plant offers extended interest in the garden, enhancing both aesthetics and biodiversity.
Please Note: Images are for illustrative purposes only and designed to be a representation of the item(s) being sold. Depending on seasonality, deciduous plants may be supplied in their dormant state and without leaves. Plants may also be pruned back, lower than stated heights, to encourage new growth.
Garden Plant Size Guide

Plants in larger pots can be multiple years older than their smaller counterparts with more mature root systems and foliage. This makes them able to thrive as a full size plant in your garden quicker than smaller alternatives.
The most common size of pot that garden plants come in are 9cm/1L/3L/5L this is in reference to the diameter at the top of the pot.
9cm potted plants still remain the most popular cost effective option though, they just may take a little patience to allow them to grow into full maturity once planted in your garden.
Plant specs, care guide & tips
Key features
When to plant
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
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Planting and period of interest times are general guidelines and may vary based on your location and conditions. For best results, consult local gardening resources.
Instructions
Top Tip
Resist the urge to provide plenty of fertiliser as this can lead to leafy growth with fewer flowers.
How to Water
Water regularly during the first growing season. After this, caryopteris is drought tolerant and only needs to be watered during particularly dry spells.
How to Plant
Choose a sheltered, sunny spot in light, well-draining soil and dig a hole around twice as wide as the root ball. Position the plant so the top of the root ball is at soil level. Backfill with soil and compost, gently firm down, and water in well.










