In many garden stores and nurseries it is common to find the striking plant known as Oxalis tetraphylla, also called Oxalis deppei, "lucky clover" or "iron cross" due to its peculiar appearance of four leaflets with a central purple spot. Although it is popularly attributed good luck due to its resemblance to the four-leaf clover, it is actually a bulbous species native to Mexico, highly valued both for its decorative beauty as for the ease of cultivation y resistance that offers in gardens and homes.
Characteristics of Oxalis tetraphylla
La Oxalis tetraphylla belongs to the genus Oxalis, which includes a great diversity of species with similar habits and appearances, but this one stands out for its leaves divided into four lobes Bright green in color with a distinctive purple or dark brown center, giving it its nickname "Iron Cross." Its appearance resembles a large clover, and is therefore often mistaken for a symbol of good luck.
The plant develops thin, elongated stems which can reach up to 25 cm in height, although their compact appearance rarely exceeds 20 cm in height and 30 cm in width. The stems emerge from underground bulbs, allowing the plant to spread and form dense, decorative clumps. When light decreases—either at night or on cloudy days—both leaves and flowers tend to close in on themselves, as a natural mechanism of protection and energy saving.
During the spring and summer, Oxalis tetraphylla can bloom profusely, displaying small, pale pink flowers. pink or deep red, formed by five petals with a center that can be white, yellow or greenish. Although discreet compared to their striking leaves, in groups they provide an extra touch of color and freshness.
Among other curiosities, it is important to know that both The leaves and flowers of Oxalis tetraphylla are edible, although its consumption should be moderate, as in large quantities it can be toxic due to its oxalate content. Some use it as a seasoning in salads, highlighting its flavor slightly acidic and refreshing.
A characteristic of this species is that in temperate climates its aerial part usually disappears in winter, leaving the bulb dormant underground, ready to sprout vigorously in spring.
Differences between Oxalis tetraphylla and other Oxalis
Although all plants of the genus Oxalis share a similar appearance, there are notable differences between Oxalis tetraphylla and other species, such as oxalis triangular and Oxalis acetosella. To differentiate them and offer them the more appropriate care, it is important to know its specific characteristics. You can learn more about other species of the genus Oxalis.
- Oxalis tetraphylla: Leaves composed of four green lobes with a purple center. It blooms in pink or reddish hues and usually grows from bulbs.
- oxalis triangular: Triangular leaves, usually deep purple, and white or lilac flowers. Highly prized as a houseplant.
- Oxalis acetosella: Smaller in size, with light green trifoliate leaves and small white flowers, it is typical of shaded and cool areas.
Correctly identifying the species is important to offer you the more appropriate care and enjoy your stay to the fullest beauty and longevity.
Oxalis tetraphylla Care: Complete Guide
La Oxalis tetraphylla It is an easy-care, hardy plant that is perfect for both beginner and experienced gardeners. However, to ensure it looks its best and its life cycle is prolonged year after year, it is key to provide it with a series of nutrients. specific care. Learn about indoor plants that bloom year-round to expand your knowledge.
Location and light exposure
La Oxalis tetraphylla prefers locations where it receives abundant but not direct lightAlthough it can be grown as an indoor plant, it is best to place it outdoors in semi-shaded areas to prevent the stems from becoming excessively thin and weak. If grown indoors, it is best to place it near bright windows, always protecting it from intense midday sunlight. You can also consult plants with purple flowers for complementary ideas.
- En exterior: Place your Oxalis in a location where it receives gentle morning or late afternoon sunlight, avoiding peak hours of the day.
- En interiorFind a bright spot near an east- or west-facing window. Rotate the pot periodically to promote even growth and prevent the stems from leaning excessively toward the light source.
The plant is able to adapt to various light conditions, but excessive shade can drastically reduce flowering and vegetation vigor. On the other hand, direct sunlight during the hottest hours can cause leaf burns.
Ideal room temperature
La Oxalis tetraphylla It tolerates temperatures well between 10°C and 25°C. It can even adapt to higher temperatures, up to 30°C, if well established and watered adequately. It is sensitive to frost; in regions with cold winters, the above-ground part disappears and the bulb goes dormant until the following spring. For more details on care in different climates, see plants for mountain climates.
In temperate or cold climates, you can extract the bulbs Once flowering is complete, store them in a dry, dark place until late winter, replanting them when mildly warm weather returns. If you prefer to leave them in the pot, cover them with a layer of mulch or move the pot to a protected area.
Substrate and soil type
El substratum is essential for the correct development of Oxalis tetraphylla. This species requires loose, light, well-drained soil to prevent waterlogging and bulb rot. An optimal mix may include:
- Quality universal substrate as a basis.
- Blond peat to improve moisture retention.
- Perlite o akadama as draining elements.
Avoid overly compacted or clayey soils. If you use pots, make sure they have good drainage and add a layer of gravel or expanded clay to the bottom to help excess water drain away. For more ideas on the ideal substrate, see colored leaves and soil types.
Watering: frequency and tips
Oxalis tetraphylla should not be overwatered.. Water only when the soil surface feels dry to the touch. In warm weather and during flowering, you may need to moderate watering Two or three times a week, but always avoiding waterlogging. In winter, significantly reduce the frequency, and if the above-ground part dries out, stop watering until the plant sprouts again. For tips on watering control, see the most exotic flowers in the world.
- The withered leaves They can be a sign of a lack of water, but also of excess, so always check the condition of the substrate.
- Peat helps maintain moisture without creating puddles; it's recommended to maintain a constant, slightly moist soil, never saturated.
- The use of rainwater or still water is preferable, since the chlorine and lime can affect the development of the plant.
Pruning and maintenance
La Oxalis tetraphylla hardly requires pruning.It is recommended to periodically remove dry or damaged leaves and stems to promote ventilation and prevent potential diseases. Most of this maintenance is performed after flowering or the onset of cold weather.
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During the period of active growth, from spring to the end of summer, you can apply liquid fertilizer for bulbous plants every 15-20 days, diluting it in the irrigation water always following the manufacturer's instructions. Correct fertilization will stimulate the formation of new leaves and a more abundant floweringTo expand your knowledge about fertilizers, visit purple plants and their care.
reproduction and multiplication
The easiest way to multiply Oxalis tetraphylla is by bulb divisionTake advantage of late winter or early spring, when the plant is still dormant:
- Carefully remove the plant from the pot.
- Separate the bulbs, taking care not to damage them, and plant each one in a different container with fresh substrate.
- Water lightly and wait for the warm weather to arrive to see new leaves and stems.
It is common for some bulbs to move or germinate spontaneously in nearby pots and even in nearby areas of the garden, as they can be easily transported. It is a plant that, once established, can form dense colonies in a short time if conditions are favorable. If you want to know more about reproduction, consult Oxalis deppei.
Pests, diseases and common problems
Although Oxalis tetraphylla is quite resistant, it is advisable to watch out for possible attacks of mealybugs, aphids and mites, especially in very dry environments or if the plant is weakened. Inspect the leaves periodically and remove pests manually or with potassium soap if necessary. For more information, you can visit Oxalis acetosella and pests.
El excess irrigation It is the plant's main enemy, causing bulb and root rot. If you notice a bad smell in the substrate or the appearance of fungus, stop watering and allow the soil to dry completely before resuming watering.
Uses, symbolism and curiosities of Oxalis tetraphylla
Due to its attractive appearance, Oxalis tetraphylla is mainly used as ornamental plant en gardens, terraces, flower pots and indoor centers. It is ideal for creating borders, composing floral arrangements or adding color to shady corners. Its ease of reproduction and low maintenance making it an excellent choice for those who want to get started in gardening.
Popular belief associates it with good luck, similar to the authentic four Leaf CloverGiving a pot of Oxalis tetraphylla is a much-appreciated gesture for family celebrations, job changes, or project starts, as a symbol of fortune and prosperity.
In some cultures, it is attributed to medicinal properties and its leaves or bulbs are occasionally used in cooking, always with caution and in very moderate quantities. Remember that, although the plant is edible, excessive consumption can cause discomfort due to the presence of oxalates.
Frequently asked questions about Oxalis tetraphylla
- Can it be grown all year round? Yes, although in cold climates it goes dormant and will sprout again the following spring.
- Is it toxic to pets? Like almost all Oxalis plants, it contains oxalates; ingesting large quantities can harm dogs and cats, so it's best to keep it out of their reach.
- Can it be planted directly outdoors? It can be grown in gardens and flowerbeds as long as the climate is temperate and the soil has good drainage.
- How long does it take to bloom? It generally blooms in the first spring after the bulb is planted if it has received proper care.
La Oxalis tetraphylla It is one of the most grateful and easy-to-maintain bulbous plants. Its striking two-colored leaves and its ease of adaptation to different locations This makes it an excellent choice for decorating both interiors and gardens. Simply provide it with a suitable substrate, water it regularly, and place it in a well-lit location to enjoy its unique beauty year after year.
