meso-middle; intermediate Designating an achiral member of a group of diastereoisomers that has at least one chiral member meso-tartaric acid; Derived terms
Many animals within the park rely on specific types of plants as their sole food source. Monarch butterflies, for example, only lay their eggs on milkweed, and only eat milkweed while in their caterpillar phase. Milkweed requires a moderately acidic soil to grow, surviving in soil pH levels from 4.8 to 6.8.As with most other plants, it cannot tolerate pH levels below 4. Overly-acidic soil prevents roots from being able to absorb water and nutrients crucial for survival.ilkweed requires a moderately acidic soil to grow, surviving in soil pH levels from 4.8 to 6.8. As with most other plants, it cannot tolerate pH levels below 4. Overly-acidic soil prevents roots from being able to absorb water and nutrients crucial for survival.
Milkweed perennials (Asclepias spp.) bear many small star-shaped flowers and produce a milky sap; they are named for this sap. The plants grow in U.S. Department of Agriculture hardiness zones 3 to 10 and bloom in summer, bearing their flowers in broad, flattened clusters at the branch tips. All varieties produce silky seeds within inflated seed pods. Milkweed thrives in a sunny location with sandy soil and offers benefits to insects.