Companion plant marigold: As a border plant, marigold repels pests
The cheery orange blossoms of marigold (Calendula officinalis) are a common sight in most healthy polycultures. They have long been used as a companion plant. Customarily they are used as an insect repelling border for ornamental and vegetable gardens. They are also renowned for fortifying their neighbours. French marigold produce an insect repelling chemical in their roots, which can help deter root aphids. The effects can linger for years.
Marigold as part of a companion planting guild for cannabis repels beetles and leafhoppers. Also on the hit list are Mexican beetle and objectionable nematodes. Their buoyant blooms attract nectar-eating species. They also add their gentle perfume to the overall stealthy potpourri of a diversely healthy marijuana patch.
|Calendula officinalis||Perennial and herbaceous.||Up to 80 cm||All year||Aromatic, distraction (orange flowers) and stealth.||Full sun.|
|pH||Soil||Germination||Spacing||Seeds per gram||Note|
|Prefers 5,5 – 7,5||Clay, sandy, loamy. compost-rich soil or potting soil.||5 – 15 days / 24 – 28 °C||15 – 25 cm||160 – 175||Insect repellent. Calendula will produce lots of seed in a similar fashion toMarigold. When the blooms dry out, cut them off and hang upside down in bundles. The seeds are contained in the heads, and once dry and crisp, they can be lightly hand-crushed and winnowed from the seed chaff.|