Bright, forgiving, and abundant: marigolds are the workhorses of the natural dye garden.

After rapid germination in 5 days at my Startup Barreiro studio, these plants took off the moment they hit the soil at Jardim dos Franceses. Placed right next to the madder and in the center of another garden bed, they quickly established roots and bushy foliage.

Once they started to flower, we split the bushes and spread them around the main garden. 

Growth & Pruning Strategy: To get the highest flower yield possible, pruning early is key. Once the plants start to flower, I pick them down to a node, leaving at least two leaves attached to the stem. Pinching early flowers forces the plant to branch laterally, creating a dense bush packed with vibrant orange and yellow blooms rather than a single tall stalk.

Harvesting & Dyeing Marigolds are high in lutein and quercetin, making them one of the easiest natural dyes to extract:

• Simply simmer fresh or dried flower heads in water for 15-30 minutes to create a rich yellow liquor.

• Pre-mordanting fibers with alum yields bright yellows, while giving an iron bath post-dye shifts the shade to grey/greens.