RM Moonlight Formal Decorative Dahlia

RM Moonlight Formal Decorative Dahlia 

RM Moonlight is a cool, ethereal dahlia that reads like moonlight captured in petals. Small, perfectly formed blooms open in icy lavender to soft purple tones, with subtle tonal variation that reads silvery in full sun and more lilac in cooler light. The blooms sit on impressively long stems, making this variety a striking choice for cut-flower gardens and high-impact mixed borders. Ideal for growers who want elegant, cool-toned color that photographs beautifully and performs reliably in the field.

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Details

• Form: Formal Decorative

• Bloom Size: ~4" / BB (4–6") class. 

• Plant Height: Tall — often reported near 5' (some growers report 4–5.5' depending on locale). 

• Stem Strength: Strong — long, useable stems for cutting. 

• Unicorn Status: Rare

• Primary Color: Icy lavender / soft purple. 

• Secondary Color: None (subtle silvery or tonal shading, not a distinct second color). 

• Plant ID:

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A Bit of History

RM Moonlight is a recent release from River Merle Farm (a 2024/2026 introduction in grower catalogs) and quickly gained attention for its cool, silvery-lavender blooms and exceptional stem length. Growers praise it for being an uncomplicated, prolific bloomer that needs little disbudding and produces long, marketable stems. Because it reads as an “icy” purple, it’s especially popular for cool-toned palettes, editorial bouquets, and any cutting garden aiming for soft, sophisticated color. 

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Ideal For

• Cutting gardens and farmer-florist production

• Elegant wedding bouquets and editorial arrangements (cool-toned palettes)

• Long-stem focal points in mixed dahlia plantings

• Cut-flower markets and CSA / bouquet shares

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Pairs Well With

Café au Lait — soft neutrals to warm and offset the cool lavender.

White or silver-foliaged plants (e.g., dusty miller, eucalyptus) — to emphasize the moonlit, silvery quality of the blooms.

Soft pink or mauve dahlias — for a tonal, romantic bouquet that blends lavender with warm pastels.