Updated: May 31, 2022

Euphorbias are a diverse genus of plants that belong to the family Euphorbiaceae. It is a large, diverse group with over 2,000 species, ranging from tiny annuals to large trees. Among them, the succulent euphorbias have become popular houseplants due to their unique shapes and colors, and their ability to thrive in a variety of conditions.

One of the most frequently asked questions by those who are interested in growing euphorbias is how tall they can get. In this article, we will explore the growth habits of euphorbias and answer some of the most commonly asked questions.

Growth Habits of Euphorbias

Euphorbias have a variety of growth habits, and their size can vary depending on the species. Some are small and compact, while others can grow up to several feet tall. The growth habits of euphorbias can be divided into three categories: shrubs, trees, and succulents.

Shrubs

Shrubby euphorbias are small to medium-sized plants that typically grow between 1 and 3 feet tall. They have woody stems that are covered in leaves and produce flowers at the tips of the branches. Some common shrubby euphorbias include the Crown of Thorns (Euphorbia milii) and the Poinsettia (Euphorbia pulcherrima).

Trees

Tree euphorbias are larger plants that can grow up to 30 feet tall. They have thick, succulent trunks that store water, which allows them to survive in dry conditions. Tree euphorbias are native to tropical regions and are often used as ornamental plants. One notable tree euphorbia is the African Milk Tree (Euphorbia trigona).

Succulents

Succulent euphorbias are perhaps the most popular type of euphorbia among houseplant enthusiasts. These plants have thick, fleshy stems that store water, allowing them to survive in hot, dry conditions. They come in a variety of shapes and sizes and can range from just a few inches tall to several feet. Some common succulent euphorbias include the Crown of Thorns (Euphorbia milii) and the Pencil Cactus (Euphorbia tirucalli).

Factors That Affect Euphorbia Growth

Several factors can affect the growth of euphorbias, including light, water, soil, and temperature.

Light

Most euphorbias require bright, indirect light to thrive. They can tolerate some direct sunlight, but too much can cause their leaves to scorch. If your plant is not getting enough light, it may grow slowly or become leggy.

Water

Euphorbias are drought-tolerant plants and do not require frequent watering. Overwatering can cause the roots to rot, so it is important to let the soil dry out between waterings. Succulent euphorbias require even less water than shrubby or tree euphorbias.

Soil

Euphorbias prefer well-draining soil that is rich in organic matter. A mix of potting soil and perlite or sand can provide the drainage that these plants need.

Temperature

Most euphorbias prefer warm temperatures and cannot tolerate frost. They should be kept above 50°F (10°C) during the winter months.

Frequently Asked Questions

How often should I water my euphorbia?

Most euphorbias prefer to be watered infrequently. Allow the soil to dry out between waterings, and do not let the plant sit in standing water.

How big do succulent euphorbias get?

The size of succulent euphorbias can vary depending on the species. Some, like the Crown of Thorns, can grow up to 6 feet tall. Others, like the Pencil Cactus, can grow up to 30 feet tall.

How often should I fertilize my euphorbia?

Euphorbias do not require frequent fertilization. You can fertilize your plant once or twice a year with a balanced fertilizer, such as a 10-10-10.

Can euphorbias be grown outdoors?

Yes! Euphorbias are often grown as outdoor plants in warm, sunny climates. However, some species may not tolerate frost and should be brought indoors during the winter months.

In conclusion, the height of a euphorbia plant depends on its species and growth habit. Shrubby euphorbias typically grow between 1 and 3 feet tall, while tree euphorbias can grow up to 30 feet tall. Succulent euphorbias can range from just a few inches tall to several feet. To ensure the health and growth of your euphorbia plant, it is important to provide it with adequate light, water, soil, and temperature.