Oxalis

Oxalis spreads via seed or bulbils: Oxalis corniculata often grows as an annual, regenerating each year from seed. Other common names striped-flowered wood sorrel. It has three (normally) purple heart shaped leaves, which each have three sides, that sit symmetrically to one another at the end of every petiole (or stem).

Oxalis , also known as common yellow wood-sorrel, is a common perennial weed in lawns and gardens. Although it is invasive, it is quite easy to kill. Oxalis responds well to repeat spraying with post-emergent broad-spectrum herbicides.

These herbicides work best when they are sprayed on oxalis during the growing season. Genus Oxalis can be annuals or perennials, with fibrous, bulbous or rhizomatous rootstocks, palmately divided leaves and funnel-shaped or bowl-shaped flowers that mostly close in dull weather and at night Details O. Solitary rose-pink, lilac or white flowers. The Oxalis may occasionally have a dormant period as part of its natural growth cycle, however it will ‘come back to life’, do not water and let the soil dry out and in a few weeks new leaves will grow and watering can resume. Temperature: this plant won’t do well with prolonged temperatures over 25°C. Largest genus in the wood-sorrel family Oxildaceae.

There are several types of oxalis that grow as hard-to-kill weeds in New Zealand. Most are fairly low growing and have small bulbs in the ground. The bulbs are hard to get rid of, and can easily be spread when the soil is disturbed or by the plant as it spreads. Bulbed oxalis can be challenging to control as it spreads quickly and the bulbils can regrow even when the top growth is controlled.

See how RHS can give expert advice on growing, feeding, pruning and propagating plants. Oxalis weed control and weed killer for creeping oxalis in lawns and other oxalis weeds. Most oxalis species are regarded as weeds.

Weed control of oxalis is a common problem. Creeping oxalis in lawns and the common yellow flowering oxalis or ‘sour sob’ are perhaps the worst. The false shamrock plant ( oxalis triangularis) is a bulb type flowering plant which is also known as the purple shamrock or wood sorrel from the oxalis genus. Oxalis triangularis (Purple shamrock) will reach a height of 0. It is a perennial weed and can last and divide in the soil for many, many years. Oxalis is one of the most common weeds in the home garden.

It has a reputation for being an extremely hard weed to get rid of. Oxalis pes-caprae is from the family Oxalidaceae. Each rhizome will eventually produce tiny bulbils. The seeds are also prolific and are ejected when ripe from tiny seed pods that look like mini okra. Oxalis are a beautiful low growing plant that is ideal for rockeries, small gaps in the garden and look equally pleasing in pots.

Oxalis Andenopylla has lovely grey green foliage that is compact and can spread to cm. Oxalis Iron Cross and Andenoplylla flower May, June. Oxalis Versicolor and Ken Aslet flower in the autumn. Oxalis (Shamrocks) Planting Guide Some of the Weirdest Looking Bulbs Out There When you open a bag of oxalis bulbs you may be surprised.

There are a number of aquatic plants that can easily get out of hand in a garden pond and are considered true weeds. Ideally these should never be introduced to the pon though they sometimes come unwittingly with other pond plants. Air plants ( Tillandsia spp.) are from Mexico and South America.