Sweet clover (Melilotus), also known as melilot, is a genus of herbaceous plants in the legume family, deservedly considered one of the most valuable honey plants. Its name derives from Greek words meaning “honey plant,” and it is popularly called “honey bearer” or “bee grass.” For beekeepers, sweet clover is a true find, as it provides a stable nectar flow even in hot weather, when other honey plants are “silent.” Let’s take a detailed look at why this crop deserves the attention of everyone who keeps an apiary.
Characteristics of Sweet Clover as a Honey Plant
The main value of sweet clover for beekeeping lies in its exceptional honey productivity. Depending on the species and growing conditions, bees can collect from 100 to 600 kg of honey from one hectare of sowing. Particularly high yields are demonstrated by annual white sweet clover — up to 400–600 kg/ha. Such productivity is due to the fact that sweet clover flowers secrete nectar almost continuously, and their number per square meter can reach one million.
The flowering duration of sweet clover is 30 to 60 days, significantly longer than most other honey plants. Mass flowering begins in June–July, and white sweet clover sometimes blooms right up to the first frosts. This allows you to “close” the nectar-free period and provide bees with food at critical moments of the season. An important feature is that the plant begins to secrete nectar from the second year of life (in the case of biennial varieties), but annual varieties provide nectar flow already in the first season.
Sweet clover nectar is transparent, with a strong hay-like aroma, easily accessible to bees. The sugar content of the nectar reaches 45–55%. Bees visit sweet clover flowers throughout the day, but especially actively in the afternoon. Thanks to the strong sweet aroma, which intensifies in humid weather, insects readily work on the flowers.
Sweet Clover Honey: Taste and Properties
Honey collected by bees from sweet clover flowers belongs to one of the most valuable and delicious varieties. Depending on the plant species, the color of the product varies from delicate white (in white sweet clover) to light amber (in yellow sweet clover). This honey has an exceptionally pleasant, delicate aroma with barely perceptible vanilla notes, which distinguishes it from other varieties.
The greatest value of sweet clover honey is its ability to remain liquid for a long time — it crystallizes much more slowly than other varieties, making it convenient for use both in liquid form and for creating cream honey. Thanks to its high fructose content (about 40%) and glucose (37%), it remains fluid for a long time. The presence of a small amount of coumarin only enhances its medicinal properties.
Key Benefits of Sweet Clover for the Apiary
Sweet clover has a number of unique advantages that favorably distinguish it from other honey crops.
- Nectar secretion in heat: Unlike many honey plants, sweet clover continues to secrete nectar even in hot weather. The optimal temperature for this is 25°C at 60% humidity. This guarantees bees a stable nectar flow during the most challenging periods.
- Long flowering: 30–60 days of continuous flowering provide bees with a long feeding period, especially important in July–September, when other honey plants have finished blooming.
- Exceptional hardiness: Sweet clover grows on almost any soil — from rocky and loamy to sandy and even saline. It tolerates drought well and withstands severe frosts (down to -25°C).
- Value for bee wintering: Sweet clover honey is considered ideal for building up bee colony strength for winter and for wintering, as it does not crystallize for a long time.
- Comprehensive benefits: Sweet clover is not only a honey plant but also a valuable forage crop (green mass contains up to 19% protein) and an effective cover crop that enriches the soil with nitrogen.
Additional Value of Sweet Clover for the Farm
Sweet clover is useful not only for beekeepers. This plant is an excellent phytomeliorant capable of improving the structure and fertility of soils. Thanks to its powerful root system and ability to accumulate nodule bacteria on its roots, sweet clover not only loosens the soil to a great depth but also enriches it with nitrogen. Plowing under the green mass of sweet clover adds up to 150–200 kg/ha of nitrogen to the soil, fully replacing the application of a significant amount of mineral fertilizers.
In addition, sweet clover is a valuable forage and medicinal crop. Its green mass contains about 19% protein, and the seeds and flowers are used in folk medicine due to their high coumarin content — a substance with anticoagulant, antiseptic, and aromatic properties. This allows you to earn additional income from growing the plant, besides honey. Sweet clover is also excellent for greening slopes unsuitable for other crops and for developing saline soils.
Sweet Clover Cultivation Technology for the Apiary
To obtain maximum nectar harvest, it is important to choose the right sowing dates and care for the crops. Sweet clover can be sown both in spring and before winter.
- Spring sowing: The best time is early spring, when the soil is still moist. Sweet clover seeds germinate at temperatures as low as +1…+2°C.
- Pre-winter sowing: Practiced for better seed stratification. Sowing must be done so that the seeds do not germinate before frost.
- Sowing method: Sweet clover is grown both without a cover crop and under the cover of early grain crops (barley, oats). With coverless sowing, the plant develops a more powerful root system and overwinters better.
- Seeding rate: For continuous row sowing, the rate is 14–20 g per 10 m²; for wide-row sowing — 6–8 g per 10 m². For forage purposes, the rate is increased to 12–16 kg/ha.
- Incorporation depth: On heavy soils — up to 0.5 cm; on light soils — up to 2.5 cm. Rolling is essential after sowing.
- Scarification: Sweet clover seeds have a hard shell, so before sowing they are recommended to be scarified (mechanically damaging the shell) to improve germination.
It is important to note that sweet clover does not tolerate strongly acidic or waterlogged soils. On acidic soils, liming is necessary. Sweet clover grows best on soils with a slightly acidic or neutral reaction.
Conclusion
Sweet clover is a universal crop that combines the qualities of the best honey plant, an effective cover crop, and a valuable forage plant. Its high honey productivity, long flowering, resistance to adverse conditions, and excellent taste qualities of honey make it an essential component of any apiary, especially in regions with challenging climatic conditions.
Smart Agro Plus offers high-quality sweet clover seeds and other honey plant seeds adapted to various soil and climatic conditions of Ukraine. Together we will create a blooming field that provides your bees with an abundant nectar flow and you with a generous harvest of fragrant honey.
Choose sweet clover for your apiary — and your bees will reward you with record nectar harvests. Smart Agro Plus — your reliable partner in creating a honey-bearing base.