sorrel

Sorrel should be watered when the top 2-3 inches of soil are dry. Depending on the climate, this may be weekly or bi-weekly. It's best to use lukewarm water, and be careful not to over-water. Too much water can lead to root rot. When watering, thoroughly soak the soil until some water drains out of the bottom of the pot. Additionally, if the leaves of the plant start to droop, it's a sign that it needs more water.

Sorrel (Oxalis articulata subsp. rubra) plants grow best when placed in a spot that receives full sun for at least 4-6 hours per day. Although partial shade is tolerated, it is best combined with a bright spot that will get the majority of sun exposure during the day. During the summer months, this sun exposure should increase slightly as more direct heat helps promote better growth. In the winter, however, it is best to keep the plant in a spot that will receive some sun, but not a lot, since too much can result in yellowing and weak leaves. Allowing for some natural shade to help protect the plant from winter winds can be beneficial for protecting its foliage.

Sorrel (Oxalis articulata subsp. rubra) should be pruned once a year, in late fall before the first frost. Pruning helps keep the plant healthy and tidy, and should be done in 2 steps: thinning and cutting back. Thinning should be done by removing some of the stems all the way at the base, removing any that are leggy, weak, or are starting to look overgrown. This keeps the plant strong and allows air to flow through the branches. Cutting back should be done between the new shoots, to about 8-12 inches (20-30 cm) above the soil. This will encourage the plant to produce new and healthy shoots for next season. When pruning sorrel, it is important to use sharp pruning shears and to make clean cuts. Any dead, diseased, or broken branches should also be removed immediately.