Botanical name: Grindelia robusta Nutt.

Synonyms: none

Family: Asteraceae

Origin: United States, Mexico

Common name: grindelia, grindelia

Hardiness: -8°C ?

IUCN Red List: no

Grindelia robusta is a perennial plant whose stems can reach 1 m in height when in bloom. The daisy-like flowers are yellow and appear in summer. The button is sticky because it's coated with a white resin. It likes the seaside, sand, rocks and fairly dry ground. It is used as a medicinal plant (antiasthmatic, antispasmodic, expectorant and cardiotonic).

For more information: https://jardinage.lemonde.fr/dossier-1883-grindelia-soigner-sphere-orl.html