Achillea millefolium 'Pastel Mixed' is a Hardy Perennial belonging to the millefolium group of achilleas — the common yarrow group characterised by flat-topped flowerheads, finely divided feathery foliage, and spreading, rhizomatous habit. It holds the RHS Plants for Pollinators designation and represents the most tonally diverse and most romantically coloured entry in the Bishy Barnabee's achillea range, producing a blend of soft apricot, rose-pink, white, and lilac rather than a single defined colour.

The Pastel Colour Palette Explained: The soft, faded quality of 'Pastel Mixed' colours is not a sign of weakness or immaturity — it is a stable genetic characteristic of this variety group, in which the anthocyanin and carotenoid pigments responsible for colour are produced at deliberately reduced concentrations, creating the characteristic sun-bleached, aged appearance that makes these tones so valuable in the cottage garden aesthetic. The colours are most saturated when the flowers first open in June and July, softening gently as the season progresses to the muted, vintage tones that dry so beautifully in August and September.

A Mixed Variety: 'Pastel Mixed' produces seedlings that will vary in flower colour — some plants will flower apricot, others rose-pink, others white, others lilac. This variation is the point rather than a drawback: the naturalistic, tapestry-like effect of a drift of 'Pastel Mixed' comes from the gentle variation between plants, which creates the sense of a naturally occurring wildflower meadow rather than a planted scheme. For a more uniform effect, the individual named varieties — Cerise Queen, Cloth of Gold, Rubra Red — are the better choice; for the most romantically naturalistic, the mixed palette of 'Pastel Mixed' is unmatched.

The Full Achillea Range: With 'Pastel Mixed' the Bishy Barnabee's achillea collection is now complete across six distinct varieties — Ballerina (white ptarmica pompom), Marshmallow (large white ptarmica pompom), Cerise Queen (vivid cerise millefolium), Cloth of Gold (deep gold filipendulina), Rubra Red (rich red millefolium), and Pastel Mixed (soft multi-tonal millefolium). Together they represent the full diversity of form, colour, and character that the achillea genus offers, from the palest white through every warm and cool tone to the deepest gold.

'Pastel Mixed' is grown in the same way as all millefolium achilleas — same surface sowing technique, same sun and drainage requirements, same long-term care.

How to Sow:
Sow indoors from February to April in trays or modules of good-quality seed compost. As with all achilleas, the fine seed requires light to germinate — scatter on the surface, press gently into contact with the compost, and do not cover. Maintain a temperature of 18–20°C. Germination typically occurs within 10–14 days, though it can be variable. With 'Pastel Mixed', expect seedlings to vary in their early leaf colour and vigour — this is normal variation within a mixed variety and all seedlings should be grown on regardless of appearance.

Transplanting:
Plant out from May to June after thorough hardening off. Space plants 45cm apart in well-drained soil in full sun. Lean soil is beneficial — achillea in rich, fertilised ground produces lush leafy growth at the expense of flowers. Once established, 'Pastel Mixed' spreads gently by rhizome and self-seeds moderately, gradually naturalising in the border in a way that enhances rather than disturbs the planting.

Ongoing Care:
Deadhead spent flowerheads to encourage a second flush of blooms in late summer. Alternatively, leave the fading flowerheads in place through August and September — the gentle, sun-bleached tones of ageing 'Pastel Mixed' flowers are genuinely beautiful in their own right and provide seeds for overwintering birds. Cut back to basal foliage in late autumn or early spring. Divide every three to four years in spring to maintain vigour.

Cutting and Drying:
For fresh cutting, harvest at peak colour. For drying — where 'Pastel Mixed' is particularly outstanding — cut just as flowers reach full colour and hang in small bunches upside down in a warm, dark, ventilated space for two to three weeks. The dried tones are soft, dusty, and warm — apricot fading to buff, rose-pink to vintage blush, lilac to pale lavender — and are among the most sought-after dried flower colours in contemporary naturalistic arranging.

The soft, multi-tonal pastel palette of 'Pastel Mixed' is among the most versatile in the summer perennial border — gentle enough to harmonise with almost anything, warm enough to anchor a romantic planting, and distinctive enough to hold its own as a drift on its own:

• 🌼 Oxeye Daisy: The Wildflower Classic. Oxeye Daisy and 'Pastel Mixed' achillea is one of the finest and most naturally evocative combinations available from perennial seed — the clean white-and-yellow simplicity of the daisy alongside the soft, complex, multi-tonal warmth of the achillea plates creating a drift that feels entirely like a native wildflower meadow rather than a planted garden. Both are fully hardy perennials that naturalise gently over time, both are outstanding for pollinators, and both thrive in the same open, sunny, well-drained conditions. The combination is at its most beautiful in June and July, when both are in full flower simultaneously, and when the straight white uprightness of the daisy stems provides a structural contrast to the horizontal spreading habit of the achillea.
• 💙 Cornflower 'Blue Ball': The Colour Theory Contrast. The electric, saturated blue of Cornflower Blue Ball alongside the soft, sun-washed pastels of 'Pastel Mixed' is a combination of considerable visual energy — the cool, vivid blue providing exactly the chromatic counterpoint needed to make the warm apricot and rose tones of the achillea appear richer and more saturated than they would against a neutral or similar-toned background. This blue-and-warm-pastel relationship echoes some of the finest Dutch master still life colour harmonies, and in a cutting garden arrangement the two together — blue cornflower spikes and soft pastel achillea plates — is one of the most romantically cottage and most immediately beautiful combinations the range offers.
• 🌼 Achillea 'Cloth of Gold': The Warm Achillea Harmony. Planting 'Pastel Mixed' alongside 'Cloth of Gold' creates the most naturalistic and most warmly toned combination within the achillea range — the soft, faded apricot and rose of the pastel mix stepping up gently through the warm colour register to the deep, rich gold of Cloth of Gold's large flat plates above. The two millefolium-related varieties share the same spreading, naturalising habit and the same flowering season, and growing them together in a drift allows the colours to merge and blend at the edges in a way that feels entirely uncontrived. In a dried arrangement, the vintage buff and soft gold of the two varieties together is one of the most beautifully warm and most cohesive dried flower combinations available from the range.
• 🌀 Echinops ritro 'Veitch's Blue': The Structural Complement. The cool, spiky, architectural steel-blue globe heads of Echinops alongside the soft, spreading, multi-tonal warmth of 'Pastel Mixed' is a combination that brings out the best in both — the precise, geometric form of the Echinops globes contrasting with the generous, relaxed flatness of the achillea plates, the cool blue-grey intensifying the warm apricot and rose tones around it. Both are drought-tolerant perennials that thrive in the same open, sunny conditions, both are outstanding for pollinators, and both dry superbly — making this a combination that works from the first June flowers right through to a dried winter arrangement of considerable beauty.

Sow indoors from February and plant out in May or June — a generous packet of approximately 1,000 seeds allows for naturalistic drifts of soft apricot, rose, white, and lilac flowering from June through to September, improving and spreading with every passing year.