How to Grow and Care for Dendrobium Orchids

How to care for Dendrobium Orchids? The majority of species grow at a moderate to rapid rate. Right at the start of the growing season or right after the orchids have completed blooming are the ideal times to plant. Read the New York Garden article to learn more about this plant.

Overview

With about 2,000 species, the Dendrobium genus is one of the largest orchid phyla. These plants, which are native to Southeast Asia, thrive in a variety of climatic conditions, from hot, humid lowlands to high-altitude, chilly mountains. Dendrobiums are primarily epiphytes, which means they develop on other plants without using their nutrients. They frequently grow on tree branches in nature. Despite the species' differences in appearance, they are all distinguished by their profusion of blossoms that come in a range of pastel tones. While some species bloom only from the tops of their stems, others bloom along the entire length of their stems. Some are evergreen while others only have deciduous leaves that fall off in the fall. Just see an overview of Dendrobium Orchids, based on the information from NC State University and N.C. A&T State University [1]:

Types of Dendrobium Orchids

Dendrobium Orchids are divided into 6 different groups, and we will show you some popular ones below.

• Dendrobium spatulata: This is an evergreen group, but can bloom several times a year. Despite other groups, Dendrobium spatulata does not require a rest during winter to rebloom.
• Dendrobium phalaenopsis: This most common group usually blooms in fall in warm conditions. In spring, this group can rebloom after resting 3 to 4 weeks in low temperatures and dry conditions.
• Callista: This group needs warm conditions to grow in summer, but low temperatures and dry conditions during winter. They bloom in bright colors.

How to Care for Dendrobium Orchid

Given that Dendrobium is a fairly big genus with numerous species, it is challenging to generalize about care needs because each species will have different demands. However, in general, during the growing season, dendrobiums require relatively warm conditions, with temperatures rising above 60 but not exceeding 85 degrees Fahrenheit. With dendrobiums, reblooming is likely to be triggered by a winter rest period, where the plant is kept at lower temperatures and water is withheld for three to four weeks. Reblooming is likely to be spurred by pruning with some varieties of orchids. Only one rebloom is possible with some dendrobium species, whereas four or five reblooms are possible with other species. Dendrobium orchids are relatively easy to grow and make nice houseplants, but they can be particular about their surroundings. So, for a healthy, well-blooming plant, paying close attention to their growing conditions is essential. In general, these orchids prefer compact pots where their roots can be slightly congested, and if you're keeping them indoors, they need to be by a bright window. During the growing season, give your orchid frequent waterings and feedings; however, in the winter, scale back on these activities.

Light

In their natural habitats, these plants thrive in filtered sunshine. However, for them to bloom well indoors, they'll probably need to be close to your brightest window, preferably one that faces south. On relatively young, small canes, the development of numerous tiny offshoot plants, known as keikis (pronounced "kay-keys"), may indicate that the plant isn't receiving enough light. If you notice yellow leaves, you may have exposed the plant to too much sunshine.

Soil

Instead of growing in regular potting soil, orchids require a unique mixture that closely resembles their natural habitat. Use a commercially available peat moss, perlite, or fir bark-based orchid potting medium. Or use those elements to create your own. To prevent leaving the roots in excessive dampness for an extended period of time, ensure that the medium is well-draining and aerated.

Water

These plants prefer moisture during the growing season but shouldn't be left in a wet medium. Overwatering can result in root rot, which can eventually cause the plant to wilt or turn yellow. Put your finger in the medium and it will tell you when to water. Wait until it has slightly dried out if it seems moist before watering. You can extend the amount of time between waterings during the winter, but don't let the medium become completely dry. As tap water can cause salts and minerals to accumulate in the pot, it is best to water with distilled water or rainwater collection.

Thermodynamics and Humidity

Dendrobium orchids prefer warm climates and thrive in conditions with daily highs of 70 to 85 degrees Fahrenheit and overnight lows of about 10 degrees. Even though they may be able to endure slightly colder nighttime temperatures of up to 50 degrees Fahrenheit, prolonged exposure to the cold is not recommended. To encourage reblooming, several varieties do need a winter rest period during which the plant is kept at a temperature of around 55 degrees for a number of weeks. The ideal humidity range for dendrobiums is between 50 and 70 percent, with a minimum of 45 percent. If your orchid's leaf tips are brown, the air may be too dry for it.

Fertilizer

Follow the directions on the packaging when feeding balanced orchid fertilizer on a regular basis during the growing season. Reduce the amount of fertilizer by roughly 50% at the end of the growth season.

Dendrobium orchid repotting and potting

In any well-draining container filled with commercial orchid potting mix, which is typically a media based on bark, dendrobiums thrive. Every two or three years, repotting is typically necessary and is best carried out in the spring. If a plant outgrows its container or if the potting soil has degraded, repotting is required. Select a pot that can hold four to six new canes, remove the plant from its old container, wash the root ball, and then plant it in the new container with new bark-based potting soil, spreading the roots out as you fill the container.

Pruning

Each year, these plants typically produce at least one new upright cane. We recommend you cut off the faded flowers at the point where they connect the canes. However, leave the old canes in place since they store water and nutrients that keep the orchid healthy. As with certain other kinds of orchids, cutting this stem short does not encourage reblooming.

How to Grow Dendrobium Orchids From Seed

Growing Dendrobium Orchids from seed is not recommended. This is because this seed needs careful care and conditions that not many gardeners can do. Thus, if you want to plant Dendrobium Orchids, we recommend you should choose a propagation method.

Propagating Dendrobium Orchids

Using a propagation method can help you divide Dendrobium Orchids if it has at least four canes with strong leaves. Follow the steps below to learn how: First, cut through the rhizome and root mass with a broad, firm knife, trying to preserve as much of the root mass as you can. Next, cut away any lengthy, hanging, or dead roots after completely removing the growing medium from the root mass. And then place the plant in a container that is about the same size as its root mass, and then add orchid potting medium to the roots. After firmly pressing down the potting media, give it a week before giving it a good watering.

FAQs

Is it possible to cultivate dendrobium orchids outside?

Although the majority of Dendrobium species are resilient in zones 10 to 12, some are hardy as far north as zone 9. They can be grown as container plants year-round in these areas on decks, patios, or courtyards. Dendrobiums are susceptible to cold, like all orchids, and temperatures below 50 degrees are likely to harm them. When the weather turns cold, be prepared to bring your potted orchids inside.

What is the lifespan of dendrobium orchids?

A dendrobium can practically live forever if replanted every two to four years. Plants that are several years old are fairly prevalent.

What distinguishes orchids from the genera Dendrobium and Oncidium?

Dendrobiums are a unique species of orchid with thick stems and a profusion of blossoms that never seem to stop. They are thought to be one of the simpler orchids to grow. Oncidium orchids, in comparison, are much more fragile, with delicate stalks and smaller flowers; because of their look, they are also referred to as "dancing ladies" or "tiger orchids." Oncidiums are thought to be a little more challenging to grow, but they frequently bloom repeatedly, as opposed to Dendrobiums, which frequently require a rest period before they rebloom.

Final Thought

Caring for dendrobium orchids can be a fulfilling and rewarding experience. With the right knowledge and attention, you can help your orchids thrive and bloom year after year. Remember to provide proper care and be patient as you watch these stunning plants grow and flourish. Sources The New York Garden works under restricted procurement guidelines and relies on peer-reviewed studies and studies conducted by academic organizations. Tertiary references should be avoided. For more information on how we ensure our material is correct and up to date, please visit our editorial policy.

1. Dendrobium - NC State University and N.C. A&T State University