isotonic (Ä«Â´sÅtonÂ´ik), adj equivalence in osmotic pressure. Specifically used in reference to a solution whose osmotic pressure is equal to that of a body fluid, such as blood plasma or tears, to which the solution is compared. isotonic muscle contraction, n See contraction, muscle, isotonic.
Best shade flowers â Perennials. There is a wide variety of flowers that grow in shade that are also perennials. These shade tolerant flowers can be planted once and will come back with lovely flowers year after year. 1  Astilbe. 2  Bee balm. 3  Bellflowers. 4  Bleeding-Heart.5  Forget-me-not.ome white flowers that grow in shade are: 1  Alyssum. 2  Astilbe. 3  Begonia. 4  Common Shootingstar. 5  Coral Bells. 6  Dropwort. 7  Heliotrope. 8  Impatiens.
If you have a shady spot in your garden, these perennial varieties will suit nicely. They will perform beautifully in part shade (which we casually define as 3-4 hours of sun per day) to full shade (spots that receive no direct sun at all). Please see the Quick Facts on each variety page for details about the individual needs of particular plants.