Forage for Pollinators: Produces Nectar and Pollen in abundance for Honey-bees, and field-scale mustard can produce good crops of honey. Short and Long-tongued Bumblebees such as the buff-tailed bumblebee (Bombus terrestris), the Red-tailed bumblebee (Bombus lapidarius) and the Common Carder bee (Bombus pascuorum), and Solitary bees such as Mining bees (Andrena and Lasioglossum species) and small Black Stem-nesting bees (Hylaeus species).
Flowering time: June, July, August
Growing information: ANNUAL CROP with yellow flowers for seed, forage, cover and green manure with added benefits of nitrogen lifting and wireworm suppression, and suppression of other soil-borne diseases such as verticillium in potato and root-rot (though it should not follow a Brassicaceae crop in rotation). Tolerates all but the most acid soils, and also tolerates saline soil. It is fast-growing and has a weed-suppressing effect though is not totally winter-hardy. When grown for seed production for the culinary mustard we are all familiar with; pollinators are a necessity. And in this case the crop is left to flower and the seed ripen before the haulm is turned in, which means there is great opportunity for beekeepers to site their hives by the crop for honey harvesting.
Sow between May and August. Sowing rate: 8 kg per acre (20 kg/ha, 2 g/m²).