Digitalis obscura drug digitalis. Its strikingly distinctive amber- to copper-colored flowers give the species its name and help distinguish it from other members of the genus. "Digitalis obscura" is native to eastern to southern Spain and northern Africa. It occurs in both the mountains and the lowlands near the coast. However, it can be grown in many non-native areas as an ornamental plant. "Digitalis obscura" naturally grows well in dry climates and in high altitudes. Unlike many other foxgloves, it is drought-tolerant when it is deeply rooted and established. It thrives in average, well-drained soil with pH levels of 5.8–7.2. It may
Plant physiology plants produce a vast array of chemical compounds with unique properties which they use to cope with their environment. Pigments are used by plants to absorb or detect light, and are extracted by humans for use in dyes. Other plant products may be used for the manufacture of commercially important rubber or biofuel. Perhaps the most celebrated compounds from plants are those with pharmacological activity, such as salicylic acid from which aspirin is made, morphine, and digoxin. Drug companies spend billions of dollars each year researching plant compounds for potential medicinal benefits. Plants require some nutrients, such as carbon and