The family Euphorbiaceae includes the genus Euphorbia. It is commonly recognized that this genus is one of the most varied in the entire plant kingdom, with approximately 2000 species. Euphorbias can range in size from weed-like, low-growing “spurges to magnificent, cactus-like succulents that can reach heights of several meters. One well-known species in this genus is the Poinsetta (E. pulcherrima), a stunning and well-liked houseplant.
The distribution of Euphorbia includes tropical regions of Africa (where the majority of the succulent Euphorbias are found), Madagascar, and the Americas as well as colder, temperate regions of Asia and Europe. Australia and the Pacific Islands both have euphorbia species.
When cut open, the majority of euphorbia species release a milky latex sap. This functions as both a defense mechanism to stop animals from eating the plant and a natural wound-healing mechanism for the plant. If it comes into touch with skin, it can result in excruciating inflammation and a rash. If consumed, some species’ latex can be quite harmful to people. The toxicities of several species are listed in this helpful resource.
This toxin has a di- or tri-terpene ester chemical structure, depending on the species. The distinctive feature that sets all euphorbia species apart from cacti is their milky sap.
A business in Australia is presently investigating the use of E. peplus sap as a skin cancer treatment. According to the notion, the sap kills the cancerous skin cells and forms a scab that finally falls off.
Due to the diversity of the genus Euphorbia, numerous reproductive strategies are seen. Monoecious plants have blooms on the same plant that are both male and female. Some Euphorbias have male and female blooms on separate plants, or they are dioecious.
This genus was given that name by Carolus Linnaeus in honor of the Greek physician Euphorbus, who is credited with discovering a use for Euphorbia as a medicine (most likely Resin Spurge).
This succulent is also a euphorbia. Take note of how the spines protrude in pairs, similar to the species seen to the right.
This Euphorbia has thick, protective skin and spines. As opposed to a cactus, the spines protrude in pairs.
Is euphorbia a seasonal or perennial plant?
Euphorbias are resilient, trouble-free perennial plants that are simple to grow. Euphorbias are well known for their distinctive flowers and brilliantly colored leaves, and they make wonderful additions to borders, rock gardens, meadows, and more.
Which Euphorbia is best?
The 6 Best Spurge Varieties to Plant as Your Secret Weapon
- Characias E. Subsp.
- Myrsinites Euphorbia Above: On a bed of gravel, Euphorbia myrsinites creeps along.
- Eupatorium rigidum
- Martinii x Euphorbia
- Various Euphorbia Amygdaloides
- Portuguese Velvet Euphorbia characias
Is it difficult to raise euphorbia?
Euphorbias require relatively little maintenance. These plants need some care to get started, but once they do, they are remarkably self-sufficient. In actuality, more people perish from over care, particularly overwatering, than from neglect. However, they are tough and make excellent starting plants.
What is Euphorbia’s common name?
The spurge family includes the enormous and diversified genus of flowering plants known as Euphorbia, sometimes known as spurge (Euphorbiaceae). In common English, the term “Euphorbia” is occasionally used to refer to all members of the family Euphorbiaceae as a whole (in honor of the original genus). [2] Some euphorbias, like poinsettias around Christmas, are commonly sold commercially. Some, like the crown of thorns plant, are frequently grown as ornamentals or are collected and highly valued for the aesthetic appeal of their distinctive floral structures (Euphorbia milii). Because euphorbias from Southern Africa and Madagascar’s deserts have developed morphological traits and shapes resembling cacti from North and South America, they are frequently mistakenly referred to as cacti. [3] Because they can withstand heat and drought and have attractive or striking overall forms, some plants are employed as ornamentals in landscaping. [4] [5]
The euphorbia genus includes small annual plants and enormous, long-lived trees.
The genus is one of the largest genera of flowering plants, with over[4] or over 2,000 members[6].
[7]
Along with Rumex and Senecio, it also has one of the widest ranges of chromosome counts.
[7]The type species for the genus Euphorbia is Euphorbia antiquorum.
[9] Carl Linnaeus published the first description of it in Species Plantarum in 1753.
The plants all have strange and distinctive floral structures in addition to a deadly, milky, white, latex-like sap.
[4] The genus can be characterized by the traits of the DNA sequences of its members or by the morphology of the flower heads. The flower head appears to be a single flower when seen as a whole (a pseudanthium). It has a special type of bloom, called a cyathium, in which each flower in the head is stripped down to the minimal minimum required for sexual reproduction. [4] Each flower is either male or female, with the male flowers consisting only of the stamen and the female flowers solely of the pistil. [4] These flowers lack petals, sepals, and other components that are common to flowers in other plant species. [4] Supporting structures for the flower head and other structures below have evolved to draw pollinators through nectar as well as through patterns and colors that mimic the function of petals and other flower components in other flowers. It is the only plant genus that possesses all three types of photosynthesis—CAM, C3, and C4—all at once. [4]
When should Euphorbia be planted?
Growing and Planting Euphorbia In a sunny spot with exceptionally well-drained soil, plant in the spring or the fall. Plant bushes in the spring and shield them from chilly winds until they are established. Even though most species prefer full sun, evergreens may tolerate a little light shade. The taller varieties make good border plants.
Are euphorbias contagious?
The ideal plant for growing beneath large trees is Euphorbia amygdaloides var. robbiae, one of the few species that grows in poor, dry soil in shadow. It grows through subterranean runners and finally forms a low carpet that smothers weeds. From spring to early summer, it produces erect spikes of lime green blooms in contrast to the dark glossy leaves. It serves as a good evergreen foil all year long for other shade-loving plants. It has received The Royal Horticultural Society’s esteemed Award of Garden Merit (AGM).
Grow Euphorbia amygdaloides var. robbiae in partially to completely shaded, well-drained soil. Trim back fading flower stems in the fall. Every spring, as part of routine border maintenance, remove undesirable seedlings.
Wear gloves whenever handling euphorbias. The creamy sap irritates the skin.
Do you need to trim the euphorbia?
Euphorbias are a lovely addition to any garden since they add color in the spring and summer and have attractively shaped foliage. They also have vivid, colorful bracts.
Some evergreen euphorbias just require their faded blooms to be trimmed back once they have finished flowering. Others have biennial stems that must be trimmed to the ground after flowering, like several Euphorbia charcacia kinds. Fall is the time to trim down deciduous plants to the ground.
Wear gloves when handling euphorbias because they all have a thick, milky sap that can irritate the skin and eyes.
How quickly does Euphorbia expand?
The heavier stems have a tendency to point in the direction of the light as they grow. To stop the container from leaning, rotate it.
The shedding of leaves is typical. In a few months, fresh leaves will emerge at the top of the stem.
I can get up to 30 feet tall in nature. I can grow quickly indoors in a container and reach a height of 5-8 feet. From the base, fresh, light-green shoots will emerge.
You may have overwatered if you notice rotting at the plant’s base or notice that the stems are no longer spongey. By removing the top treatment and allowing the soil to breathe, you might attempt to dry it out. If the stem is still too wet, you can cut it with a fresh corrugated knife and transplant it in fresh, drier soil.
What Euphorbia species are invasive?
Northern California is home to isolated occurrences of Euphorbia esula, which is displacing native plant species. Prairies, grasslands, and pine savannahs are just a few of the vegetation types it can invade and take over.
Can Euphorbia be grown outdoors?
- 1.Poinsettia: Popular Christmastime plants include poinsettias (Euphorbia pulcherrima). During the holiday season, you may buy these potted plants in brilliant red at florists and garden retailers. Bracts, which are modified colored leaves that also exist in yellow, white, and pink variations, are a feature of poinsettias. With careful care, a poinsettia you receive as a gift can survive your Christmas tree and blossom again the following winter.
- 2. Crown of thorns: Also known as Christ plant or Christ thorn, the crown of thorns (Euphorbia milii) is a low-maintenance plant that adapts well to both indoor and outdoor environments. Green leaves and tiny, vibrant flowers are features of crown of thorn plants. A milky sap is released when the plant’s sharp, prickly stems and branches are damaged. You should be aware that crown of thorns have a high level of toxicity and can be dangerous to both animals and people if consumed if you’re thinking of keeping one indoors.
- 3. Euphorbia amygdaloides ‘Efanthia’ wood spurge: This species of wood spurge is an evergreen herbaceous perennial that is distinguished by its chartreuse, yellow-green flowers.
Are euphorbias sun-loving plants?
The most striking euphorbias I plant are a type of E. characias wulfenii known as “John Tomlinson,” which has bright lime yellow “cymes” (flower clusters) that rise to 4 feet on stems covered in silver-gray foliage.
In actuality, E. characias’ wulfenii subspecies exhibits a wide variety of shapes as a result of its wide variety of natural environments. However, they all have the distinctive black “eye” on each blossom and have the most shrub-like structure of any hardy euphorbia, making them great for giving a border more body.
Despite being a hardy perennial, E. characias produces stems that bloom every two years. It generates spires in the summer that bloom in the spring after. It tends to begin growing bowed over, but by early summer, it gradually straightens itself to form a long mane of inverted glaucous leaves.
In my yard, when the cymes have stopped flowering, they should be pruned as close to the ground as feasible. Although it may appear like a rather severe course of action, it is vital to promote vigorous new growth in order to provide a show the next spring.
E. characias’ growth from the previous season may withstand all but the coldest winters, especially in well-drained soil, whereas E. griffithii sprouts new growth every spring in the form of scaly spears that resemble asparagus and poke through the ground.
Unlike most euphorbias, which range in color from yellow to green, it has hues of orange, red, and purple. A variation of this with redder coloring is called “Dixter.” However, it can become invasive in full sun and well-drained soil.
Euphorbias are not all criminals. In April and May, Euphorbia polychroma produces a flat cluster of breathtakingly brilliant yellow. The ground-covering cypress spurge, E. cyparissias, with lime-green flowers that glisten in the sunlight. It can grow in places where it is not wanted, but I like it and it is not too difficult to weed. It thrives in light soil and direct sunlight.
Although E. palustris prefers moist shade, most euphorbias actually prefer a light, dry soil. I cultivate E. palustris ‘Walenburg’s Glorie,’ and the moist soil and bright sunshine seem to be ideal conditions for it. It needs support because it can become rather strong and topple over its neighbors.
All euphorbias generate a milky sap that, especially when exposed to sunshine, can make people allergic to their skin. Wear gloves and exercise caution. If you do accidentally get some on you, wash it off right away with water.