Zygopetalum Orchid Care Indoors; Watering, Potting Mix, Fertilizer, Propagation, Problems

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What Is a Zygopetalum Orchid?

Zygopetalum Orchids or Zygos are easy-care, popular orchids, featuring colorful, fragrant, waxy, long-lasting blooms which occur in multiples in shades of green, purple, burgundy and raspberry with several patterns.

The leaves are glossy and strap-like. They are deeply ribbed and light-green reaching about 2 feet long. Zygos have a robust growth form and bear large, ovoid-conical pseudobulbs which are deciduous. Their sympodial growth habit; they grow new shoots from a rhizome each season, makes them relatively easy to propagate and maintain over the years.

The genus name 'Zygopetalum' is derived from the Greek words zugon meaning "yoke" in reference to the yoke-like growth at the base of the lip (lowest flower petal).

Botanical name: Zygopetalum

Tribe: Maxillarieae

Subtribe: Zygopetalinae

Common name: Zygos

Origin: Zygopetalum is a genus that occurs in humid forests at low- to mid-elevation regions of South America, with most species occuring in Brazil. Most are epiphytes but some are terrestrials.

How bid do Zygopetalum orchids get?: Zygopetalum orchids can grow to a height of 3 feet in good growing conditions.

Flowers: Zygos blooms are held by tall, upright stems and will fill a room with a delightful fragrance. Many varieties produce a strong, sweet fragrance reminiscent of hyacinth. The blooms typically appear in fall and winter and can last 6-8 weeks.

Is Zygopetalum Orchid toxic? No, Zygopetalum Orchids are non-toxic to both humans and pets. They are safe to grow in a home where there are children, cats, dogs and other pets.

Where to Buy Orchids: If you would like to add orchids to your collection, you may obtain these plants from Etsy (Link to Etsy).

Popular Zygopetalum Orchids

1. Zygopetalum mackayi: A highly fragrant species which features grass-green petals and sepals heavily marked with dark-brown or burgundy blotches, paired with a prominent, stripy white and purple lip.


2. Zygopetalum Artur Elle 'Tombstone': A sought-after cross and is known for its deep-purple and green coloration.


3. Zygonisia Cynosure 'Blue Birds': A popular that features stunning, vibrant bluish-purple and white tones with a compact growth habit.


4. Zygopetalum crinitum: A compact plant which features smaller flowers with richly blotched brown sepals and petals, along with a velvety, purplish-blue lip.


5. Zygopetalum maxillare: It features medium-sized blooms with dark brown petals and an eye-catching pink or mauve lip. Prefers warmer growing conditions than most.

How Do You Care for Zygopetalum Orchid Indoors?

A Brief Overview:

• Light: Bright indirect light of 8-10 hours daily; keep it away from direct sunlight to prevent scorching. Position it next to a bright, sunless, east- or west-facing window.


• Watering: Water when the top 1-2 inches of soil dry out. Keep the soil consistently moist in spring and summer. Decrease watering in fall and winter to maintain the soil slightly moist.


• Temperatures: Provide day time warmth of 18-27⁰C and cooler night temperatures of 13-18⁰C. Keep it away from sources of drafts to avoid slowed growth, yellowing, wilting and leaf loss.


• Humidity: Maintain a humidity of 65-75%; use a wet pebble tray or a cool mist humidifier to prevent browning of leaf tips and edges.


• Soil: Use a rich, well-drained orchids potting mix to prevent waterlogging which can cause rotting and death of the orchid.


• Fertilizer: Feed with orchid's fertilizer every 2 weeks during the growing season (spring and summer). Reduce or stop feeding in fall and winter.


• Pruning: Regularly remove dead and yellow leaves to keep it neat. After blooming, cut the flower stalk 1 inch above the 3rd node from the bottom to encourage flowering.


• Potting and repotting: Use a pot with drainage slits to give the roots good aeration. Repot every 1-2 years only when pot-bound or when the soil is completely broken down


• Propagation: Zygopetalum Orchid is best propagated by rhizome division at the beginning of the growing season (spring to early summer).


• Common problems: Lack of blooms, drooping leaves, brown & dry leaf spots, black leaf tips, mealybugs, scale insects, aphids, slugs and snails.

How to Keep Zygopetalum Orchid Thriving

How often should I water Zygopetalum?

For lush growth and regular blooms, water Zygopetalum Orchids liberally until water drips through the drainage hole in the growing period, to maintain the soil consistently moist. Allow the top 1-2 inches of soil to dry out between waterings. Avoid overwatering to prevent rotting, drooping and yellowing leaves.

Decrease watering in the cold season to keep the soil slightly moist since growth is minimal at this time. Do not let the soil dry out completely for a long period as too little soil moisture can lead to shrivelling leaves, drooping and yellowing.

Use tepid (room temperature) water as consistently watering with cold water can cause cold shock which can result in stunted growth. In addition, ensure the water is chlorine-free to prevent browning of leaf edges and death of the orchid.

Use a pot that has adequate drainage and a well-draining potting mix to prevent waterlogging which can lead to rotting and plant death. Avoid wetting the foliage to minimize fungal diseases.

Zygopetalum Orchids like Vanda Orchids are more drought-tolerant due to the presence of pseudobulbs and their thick leaves. As such take care not to overwater the orchid as it may begin to rot.

Where is the best place to put Zygopetalum?

Zygopetalum Orchid thrives in bright indirect light (dappled light) of 8-10 hours; place it near a bright, sunless, east- or west-facing window. Keep it away from direct sunshine to prevent scorching of the leaves.

Too little light for Zygos will result in drooping, leggy growth and no blooms. If the natural lighting is inadequate, use full spectrum grow lights to supplement it.

To determine if your orchid is receiving the correct amount of light, look at the leaves. The leaves of a Zygo that is receiving the correct light are light-green. The leaves of an orchid that is getting too little light are dark-green while those of an orchid that is receiving too much light are yellowish.

Regularly turn the pot to ensure that the orchid gets adequate light on all sides for uniform growth as well as prevent lopsided growth.

Zygos benefit from outdoor placement in summer. Place the orchid outside in a shaded place like under a tree to prevent scorching and eventual death of the plant.

Temperature & Humidity

Zygopetalum Orchid prefers a warmth of 18-27⁰C during the day and cooler night temperatures of 13-18⁰C. The cool nights are necessary to trigger flowering.

Keep Zygos away from sources of drafts like heat sources, radiators, hot air vents, AC units, open doors, drafty windows and others, to prevent sudden temperature changes which can result in reduced growth, bud blast, wilting and yellowing.

Zygopetalum Orchid flourishes in a humidity of 65-75%. Too low humidity (dry air), especially in winter, will cause browning of leaf tips and edges. To increase humidity, set the pot on a wet pebble tray, use a cool mist humidifier or group the plants together. Do not mist the leaves and maintain good air circulation to reduce fungal diseases.

What is the best fertilizer for Zygopetalum?

Feed Zygopetalum Orchids with an orchid's fertilizer every 2 weeks in the growing season. Ensure to follow the manufacturer's recommendations. Stop feeding in the cold season as growth is minimal at this time. Do not feed an orchid that is in flower.

It is better to err on the side of underfeeding than overfeeding as it can result in loss of roots and death of the orchid. Overfeeding can also lead to vegetative growth at the expense of flower production.

What is the best potting mix for Zygopetalum?

The best potting mix for Zygopetalum Orchid is a rich, loose, free-draining, bark soil to prevent waterlogging while providing the required nutrients. A blend of 50% bark, 30% sphagnum moss and 20% perlite or charcoal or an orchid potting mix are ideal this plant.

When to repot a Zygopetalum Orchid?

Zygopetalum Orchids bloom best when they are pot-bound. Repot only when growth begins to suffer; when the orchid has outgrown its pot, and the new growth reaches out over the edge of the pot, or when the soil has broken down completely.

Basically repotting a Zygopetalum Orchid every 1-2 years should be adequate. Repot when new growth begins, shortly after blooming is over. Do not repot an orchid that is in flower as it may shorten the flowering season.

Use a pot with proper drainage holes or slits as the roots need good air circulation. The pot should be only 1 size larger than the current one and about 1 inch wider than the pseudobulb to avoid overpotting; Zygos prefer being slightly snug.

When repotting, shake off excess soil and trim off any dried and shrivelled pseudobulbs. The large orchids can be divided into several sections to propagate new plants. Check out these ceramic orchid pots on Amazon.

Pruning & Grooming

Pruning Zygopetalum Orchid is easy. Remove dead and diseased leaves by cutting them at the base with sharp scissors or a knife.

When flowering is over, cut the flower stalk 1 inch above the 3rd node from the bottom.

Occasionally clean the leaves by damp-wiping with a soft cloth to get rid of dust to increase surface area for light absorption.

How to make Zygopetalum bloom?

A Zygopetalum Orchid may fail to bloom due to cultural faults like insufficient light, inconsistent watering, soggy soil, dry air, temperature stress, nutrients deficiency or maturity. To promote blooming, give it the right growing conditions.

1. Light: Move the orchid to a brighter spot where it will receive bright indirect light like near an east- or west-facing window or instal a grow light if the natural lighting is not enough.


2. Watering: Water Zygos when the top 1-2 inches of soil feel dry and do not allow the soil to dry out completely for a prolonged period. Cut down on watering in the cold season.


3. Soil & potting: Use a pot with proper drainage holes or slits and a chunky, loose, well-draining potting mix.


4. Humidity: Set the pot on a wet pebble tray, use a cool mist humidifier or group the plants together to raise humidity.


5. Temperature: Keep the orchid away from sources of drafts like heat sources, open doors, drafty windows, hot air vents, AC units among others. Give it a warmth of 18-27⁰C with cooler night temperatures of 13-18⁰C.


6. Fertilizer: Feed the orchid every 2 weeks with an orchids fertilizer in spring and summer but do not feed in fall and winter to prevent fertilizer burn.


7. Maturity: Be patient; mature plants typically bloom once yearly, usually in fall or winter.

Zygopetalum Propagation

Zygopetalum Orchid is best propagated by rhizome division when flowering is over, at the beginning of the growing season.

How to propagate Zygopetalum Orchid by rhizome division

1. Gently split the rhizome into sections while ensuring there are at least 3 shoots on each section.


2. Seperate the roots attached to each division from the mother orchid root-ball. Remove the old potting soil attached to the section roots.


3. Select a pot about 1-2 inches larger than the pseudobulb. Ensure the pot has enough drainage holes and slits to prevent rotting.


4. Position each section in the center of the pot, bury the roots while ensuring that the bottom of the pseudobulb is level with the top of the soil.


5. Stake each newly repotted plant to prevent it from toppling over.


6. Place the set up in a well-lit place, away from direct sunlight to prevent scorching.


7. Wet the soil lightly to enhance root development. Avoid overwatering to prevent rotting.


8. Allow enough time for the establishment of the new orchids, after which you can begin routine care.

Zygopetalum Orchid Problems & Remedies

Zygopetalum Orchid common problems are lack of blooms, drooping leaves, brown & dry leaf spots, black leaf tips, pests and diseases among others. Keep reading for more on these problems and how to fix them.

Why is my Zygopetalum orchid not flowering?

Your Zygopetalum Orchid is not flowering due to low light, nutrients deficiency, inconsistent watering, soggy soil, dry air or temperature stress.

How to encourage blooming on Zygopetalum Orchid?

Low light: Move the orchid to a brighter spot where it will receive bright indirect light or instal a grow light if the natural lighting is not enough.

Nutrients deficiency: Feed the orchid every 2 weeks with an orchids fertilizer in spring and summer.

Inconsistent watering: Water the orchid when the top 1-2 inches of soil feel dry and do not allow the soil to dry out completely for a prolonged period.

Soggy soil: Use a pot with proper drainage and a well-draining orchids soil.

Dry air: Set the pot on a wet pebble tray, use a cool mist humidifier or group the plants together to raise humidity.

Temperature stress: Keep the orchid away from sources of drafts like heat sources, open doors, drafty windows, hot air vents, AC units among others.

Drooping leaves

Drooping leaves on Zygopetalum Orchid are caused by soggy soil, inconsistent watering or drafts.

How to fix it

Soggy soil: Use a pot with proper drainage holes and a free-draining orchids potting soil.

Inconsistent watering: Do not water on a schedule; water when the top 1-2 inches of soil dry and do not allow the soil to dry out completely for a long period.

Drafts: Keep the orchid away from sources of drafts like open doors, drafty windows, hot air vents, heat sources, AC units among others.

Brown & dry leaf spots

Exposing Zygopetalum Orchid to direct sunshine will result in scorch marks which are brown, dry spots on the leaves.

How to fix it

Move the orchid to a more shaded spot or use a light curtain or sheer curtain to filter the sunrays.

Black leaf tips

Black leaf tips on Zygopetalum Orchid are due to presence of chemicals like chlorine and flourides in the water or accumulation of salts in the soil.

How to fix it

Use chlorine-free water only and regularly, flush out excess salts by running a stream of water through the soil until it comes out through the drainage holes.

Pests

The common pests of Zygopetalum Orchids are mealybugs, scale insects, aphids, slugs and snails.

How to fix it

1. Isolate the infested orchid to prevent spread to other plants.


2. Treat the infested orchid with neem oil as per the manufacturer's instructions.


3. Regularly inspect the orchid for these pests and take timely control measures.


4. Maintain the orchid well pruned to depress the pests populations.


5. Set the pot on a wet pebble tray or use a humidifier to elevate humidity as it discourages the pests.

Diseases

Zygopetalum Orchid is prone to powdery mildew which presents as white powdery dust on the leaves. It is prevalent in overdamp conditions coupled with poor air circulation.

How to fix it

1. Seperate the affected orchide to reduce spread to the rest of the plants.


2. Treat the affected plant with neem oil as indicated by the manufacturer.


3. Do not mist the leaves to minimize the disease infestation.


4. Ensure good air circulation to discourage the disease.

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