This cache is not at the posted coordinates. You have to solve an easy puzzle first.
Heads up: Sugar sand is tough terrain to walk on. Bring lots of water.
Madagascar periwinkle (Catharanthus roseus)
also known as bright eyes, graveyard plant, and an old maid. It is native to Madagascar and has a long history of weediness, landscape and medicinal use. It is drought tolerant and flowers just about year-round.
It has been used as a folk remedy for diabetes. The leaves were used to treat wasp stings. It can be used as an astringent, diuretic and cough remedy. Inhabitants of the Caribbean make an extract from the flowers to treat eye irritations and infections.
Many plants of the Apocynaceae contain alkaloids. Some alkaloids are extremely toxic to humans, so don’t taste the weeds in search of home remedies.

Cache placed with permission from the Seabranch preserve park manager Christopher Camargo.