Botanical profile

Yellow Sweet Clover

Latin name
Melilotus officinalis
Common name
Yellow sweet clover
Type
Biennial melliferous plant
Family
Fabaceae

Yellow sweet clover is a biennial medicinal and melliferous plant, appreciated for its airy habit, fine foliage, and long clusters of small, fragrant yellow flowers. Its rustic appearance integrates very well into medicinal plant gardens, naturalized landscapes, wild borders, and pollinator-friendly spaces. Its bright bloom adds height, movement, and a natural touch to sunny flowerbeds.

Easy to cultivate, yellow sweet clover prefers a sunny location, in light, well-drained, and moderately fertile soil. It tolerates poor soils and drier conditions quite well once established, making it an interesting plant for prairie-style gardens, embankments, naturalized areas, and low-maintenance landscapes. Its slender growth allows it to be used as a background plant or as a light element among perennials and grasses.

Highly valued by bees and other beneficial insects, yellow sweet clover helps enrich garden biodiversity. Traditionally recognized as a medicinal and aromatic plant, it also releases a sweet scent, slightly reminiscent of freshly cut hay when dried. It is an ideal plant for gardeners looking for a useful, melliferous, natural species that is easy to integrate into a medicinal garden or a rustic landscape.

Care guide

Care level
Easy

Choosing this plant

Main benefit
Yellow melliferous flowering and soil-improving plant
Flowering meadow, pollinator garden, green manure, natural bed, dry soil
Container growing
Possible to grow in a deep, well-drained container
Seasonal care
Cut after flowering to limit self-seeding; use as green manure before seed set if desired
Growing conditions

Light, soil, water and hardiness

Hardiness zone
Zone 3
Exposure
Sun
Watering
Moderate; allow the soil surface to dry slightly between waterings
Humidity
Low to medium moisture; tolerates dry soil once established
Fertilization
Undemanding; light compost for sowing only
Soil type
Light to medium, poor to fertile, well-drained soil
Soil pH
Neutral to alkaline
Minimum temperature
-30°C
Propagation method
No-till drilling
Plant appearance

Blooming, foliage and shape

Blooming period
Summer
Flower color
YELLOW
Fruiting
Seeds in pods at the end of the season
Foliage color
Green
Foliage type
Obsolete
Shape
Upright and branched habit
Garden structure

Size and growth

Height
90 to 150 cm (36 to 60 inches)
Width
45 to 60 cm (18 to 24 inches)
Growth rate
Rapid growth
Vegetable garden and yield

Companion planting, spacing and harvest

Companion plants
Yarrow, knapweed, grasses, clover
Spacing
30 to 45 cm (12 to 18 inches)
Not recommended for pets
Not recommended for pets

Pets

Butterflies
Plants that attract butterflies

Butterflies

Deer
Less attractive or generally tolerated by deer

Deer

The availability of our plants varies depending on arrivals, seasons, nursery production and supplier availability. Some varieties may be offered for a limited time only, depending on their natural cycle or current stock. These plant profiles are designed to guide and inspire you when choosing plants for the garden, landscaping projects, containers or long-lasting outdoor arrangements.