Dill is appreciated by butterflies, bees, and birds.
Its scent repels certain unwanted insects such as carrot fly, aphids, red spiders, and leek moth.
Growing a bit taller than bouquet dill, "Mammoth Long Island" has greener and more sparse foliage. Its yield is higher, and it matures earlier than other dill varieties.
Dill does not tolerate transplanting well. Direct sowing in the garden is preferred. When all risk of frost is eliminated, sow dill seeds in a rich, moist, and well-drained soil. Sow them 1/4 inch deep, making sure to cover the seeds well. Mulch them to control weeds and help retain soil moisture. Mature plants can bolt if the soil is too dry, so ensure the soil is consistently moist and provide a sheltered spot protected from strong winds.
Once the leaves reach a sufficient size, you can harvest them. Fresh leaves, which have a better taste, can be kept in the refrigerator for up to 2 days. They can also be dried and frozen.