Seeds - Nodding Bur Marigold

For successful seedlings,
see the growing notes at the bottom of the page!

Nodding bur marigold (Bidens cernua) is an annual or biennial plant with bright yellow flowers resembling small daisies, which bloom in late summer and fall. Its sturdy stems and dense green foliage make it an excellent addition to water gardens or wetland areas, offering vibrant colour and a food source for insects at a time of year when many other plants begin to fade. Later in the fall, its seeds provide a valuable food source for ducks and various seed-eating birds.
This plant prefers consistently moist to swampy soils and thrives in full sun or partial shade. It is ideal for rain gardens, pond edges, or wetland areas in the garden. However, nodding bur marigold is also known for its ability to adapt to diverse soil conditions.

Ecological Roles
Nodding bur marigold plays an essential role in water filtration and purification. Its roots and plant structure help stabilize sediments and can contribute to reducing erosion. This plant also absorbs excess nutrients from water, such as nitrogen and phosphorus, which helps control eutrophication of water bodies.
By growing in wetland areas, it helps maintain water balance in these ecosystems. It can modulate water flow and aid in preventing flooding by absorbing excess water during heavy rains. Additionally, its seeds and flowers support local wildlife, including pollinators and seed-eating birds.

Nodding bur marigold seeds require cold stratification to ensure germination. See the cultivation notes below for more details.

Akène cannot assume any responsibility for the use of plants for therapeutic purposes. Always seek advice from a professional before using a medicinal or edible plant.