I am planting this oxalis in the hopes that it will spread and provide me with a lush, year-round ground cover. Northwest tribes ate the redwood sorrel with dried fish. Cultivation. Grow in humus-rich, moist soil in full or partial shade. The leaves could be eaten in small amounts raw or cooked. Description Redwood sorrel, also referred to as Oregon sorrel, is a native perennial groundcover that blankets the Douglas fir forests of the Pacific Northwest, as well as the redwood forests of California. Ethnobotany and Plant Uses. Without supplemental irrigation, plants will become dormant in the warm late summer months, but will re-emerge with the winter rains. It's found all over the Los Angeles area. If growing from roots then bury the tubers about 4 to 5 cm (~2 inches) deep in the autumn. Wildlife, Underplanting, Ground Cover, Beds and borders, Woodland. False Shamrock, Wood Sorrel, and other Oxalis members can be grown from either roots or seeds.. How to Grow Oxalis. Silver Shamrock (Oxalis adenophylla) hails from outside North America but performs beautifully, even in full sun, in many US and other temperate locales. I recently walked with a childhood friend through Armstrong Redwoods State Natural Reserve, one of the only old coast redwood forests left in Sonoma County.It certainly felt like fall, with the sunlight low in the sky as midday approached. Planted in shady areas, redwood sorrel can spread vigorously making an attractive ground cover. The genus name for wood sorrel … Wood Sorrel Is Edible. The seeds should be sown using fresh seed; these are normally produced at the end of summer. Getting Acquainted With Wood Sorrel. Its lemony taste is a great addition to a morning salad. Suggested uses. Oxalis oregana (Redwood sorrel) will reach a height of 0.2m and a spread of 0.6m after 5-10 years.. The genus name Oxalis refers to the compound oxalic acid, a tangy, mildly toxic compound in the leaves. These plants may be used as houseplants, in borders, or as ground covers. If you keep your eyes open, you're bound to encounter it. Dense clay soil, and heavy root competition can slow the establishment of Redwood Sorrel in the garden, but once established it can spread rapidly. Wood sorrel is one of my favorite edible wild plants. Redwood Sorrel (Oxalis oregana), which carpets the forest floor beneath Pacific redwoods, is one desirable form. Morphology: Forming a solid carpet of shamrock foliage that spreads by rhizomes, this species is classified as a herbaceous perennial. Dry redwood sorrel shows signs of drought stress at Armstrong Redwoods.