Hardy's Cottage Garden Plants
Agapanthus 'Windsor Grey'
Agapanthus 'Windsor Grey'
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Plants are dispatched in growing condition and may not be in full flower. If too tall to pack safely, we may cut them back — this helps them establish more quickly. Read our Mail Order FAQs.
‘Windsor Grey’ is one of the most elegant Agapanthus in cultivation — tall stems carrying large, rounded heads of soft dove-grey flowers above mid-green strap-like foliage. Each stem flowers consecutively, extending the display from July to September, and the sculptural seed heads are worth keeping for autumn interest.
Grow in full sun in a sheltered spot in well-drained soil. RHS hardiness rating H5 (hardy to -15°C); in containers, move against a sheltered wall or under cover for winter.
Height × Spread: 100cm × 50cm
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Plant Notes
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Care Guide:
Grow in rich, moisture-retentive but well-drained soil in full sun. Mulch crowns in autumn. Remove spent flower stems to prevent seed set. Less hardy forms are best containerised and overwintered under cover — check hardiness before planting out.
In containers, repot one size up every two to three years; water and feed from spring to early autumn. Divide in spring when pot-bound. -
Good to Know:
Pollinator-friendly — the flowers attract bees.
Reliable in a sheltered, well-drained spot; less hardy forms need winter protection.
⚠️ Humans & Pets: Harmful if eaten. (Toxic to dogs and cats.) -