The Ming Thing cactus presents a fascinating, sculptural form with its blue-green, branching columns. If you’re looking for a houseplant that is truly unique and easy to care for, the ming thing cactus is an excellent choice. Its unusual shape makes it a standout in any collection.
This cactus, scientifically known as Cereus forbesii ‘Ming Thing’, is a cultivar prized for its monstrous, irregular growth. It’s a conversation starter. We’ll cover everything you need to know to keep one thriving in your home.
Ming Thing Cactus
This section dives into the core identity of this peculiar plant. Understanding its background helps you appreciate its needs and its unique place in the world of succulents.
Origin And Botanical Background
The Ming Thing is a cultivated form, or cultivar, of Cereus forbesii. The wild species is native to South America, found in countries like Argentina and Bolivia. The ‘Ming Thing’ mutation, characterized by its chaotic, clustering growth, was selected and propagated for its ornamental appeal.
It belongs to the large Cactaceae family. Unlike typical columnar cacti that grow straight, this cultivar’s growth points multiply unpredictably. This results in its signature twisted, lumpy, and branching form that resembles coral or abstract sculpture.
Physical Characteristics And Growth Habit
The Ming Thing cactus is slow-growing, which makes it ideal for container life. Its stems are a distinctive blue-green or gray-green color. They have a waxy coating that helps protect it from sun.
- Form: Irregular, clustering columns that branch freely in a contorted manner.
- Ribs: The stems have 5 to 8 rounded ribs that are not very pronounced.
- Areoles: Small, fuzzy bumps along the ribs from which spines emerge.
- Spines: It has short, stout spines that are usually a brown or gray color. They are not typically considered dangerous but can be sharp.
- Size: As a potted plant, it rarely exceeds 12 to 18 inches in height and spread, though it can grow larger over many years.
Flowering And Fragrance
It is possible for a mature Ming Thing cactus to flower, though it is not common indoors. The blooms are nocturnal, opening at night and closing by morning.
Flowers are large, funnel-shaped, and usually white or pale pink. They often emit a strong, sweet fragrance to attract night-flying pollinators like moths. Do not be discouraged if your plant never flowers; its primary appeal is its striking foliage.
Complete Care Guide For Your Ming Thing Cactus
Caring for a Ming Thing cactus is straightforward. It shares the same basic needs as most desert cacti. The key is to mimic its natural, arid environment as closely as possible.
Light Requirements: Finding The Sweet Spot
Light is the most critical factor for a healthy Ming Thing. It thrives in bright, direct light.
- Ideal Location: A south-facing or west-facing window is perfect. It needs at least 4-6 hours of direct sunlight daily.
- Signs of Insufficient Light: The plant may start to etiolate, or stretch, becoming thinner and paler as it reaches for light. The unique compact form will be lost.
- Acclimation: If moving your plant to stronger light, do so gradually over a week or two to prevent sunburn, which appears as bleached, scorched patches.
- Outdoor Summer Care: It can enjoy a summer outdoors in full sun. Just ensure the transition from indoors is slow to avoid shock.
Watering Practices: The “Soak And Dry” Method
Overwatering is the fastest way to harm a cactus. The Ming Thing is highly drought-tolerant and prefers to dry out completely between waterings.
- Check the soil moisture by sticking your finger about 2 inches into the pot. If it feels dry, it’s time to water.
- Water thoroughly until excess water drains freely from the bottom of the pot. This ensures the entire root ball gets moisture.
- Empty the saucer or cache pot after 15 minutes so the plant is not sitting in water.
- Wait until the soil is completely dry again before repeating. This could mean every 10-14 days in warm summer months and every 4-6 weeks or less in the cool, dormant winter.
When in doubt, it’s safer to underwater. A shriveled cactus can often be revived with water, but a rotten one from overwatering usually cannot.
Soil And Potting Mix Essentials
The right soil is non-negotiable. It must drain exceptionally quickly to prevent root rot.
- Commercial Mixes: Use a pre-made cactus and succulent potting mix. These are formulated for fast drainage.
- DIY Recipe: For better control, make your own mix. A simple blend is 2 parts regular potting soil, 1 part coarse sand or poultry grit, and 1 part perlite or pumice.
- Pot Choice: Always use a pot with at least one drainage hole. Terracotta pots are excellent because they are porous and allow the soil to dry faster.
Temperature And Humidity Preferences
The Ming Thing cactus prefers warm temperatures and low humidity, typical of desert conditions.
- Temperature Range: It enjoys average room temperatures between 70-100°F (21-38°C) during the growing season. It can tolerate temperatures down to about 50°F (10°C) in winter.
- Cold Protection: Protect it from frost and freezing temperatures at all costs. Prolonged exposure to cold will damage or kill the plant.
- Humidity: Average household humidity is fine. It does not require any extra misting; in fact, high humidity can promote fungal issues.
Fertilizing For Optimal Growth
Fertilizing is simple and should be done sparingly. These plants are adapted to nutrient-poor soils.
- Use a balanced, water-soluble fertilizer formulated for cacti and succulents (e.g., 10-10-10).
- Dilute it to half the strength recommended on the package label.
- Apply this diluted fertilizer only during the active growing season (spring and summer).
- Fertilize once a month at most. Do not fertilize in the fall and winter when the plant is resting.
Potting, Repotting, and Propagation
As a slow grower, your Ming Thing won’t need frequent repotting. When you do, it’s also the perfect time to create new plants.
When And How To Repot
Repot your Ming Thing cactus every 2-4 years, or when you see roots growing out of the drainage holes. The best time is in the spring or early summer.
- Prepare your new pot, which should be only 1-2 inches larger in diameter than the old one. Too large a pot holds excess moisture.
- Carefully remove the plant from its current pot. Wearing gloves can protect your hands from the spines.
- Gently loosen the old soil from the root ball and inspect the roots. Trim any that are black, mushy, or dead.
- Place a layer of fresh, dry cactus mix in the new pot. Position the plant in the center and fill in around it with more mix.
- Wait about a week before watering to allow any disturbed roots to heal and prevent rot.
Propagation Techniques
Propagating a Ming Thing is usually done through cuttings or offsets. Seed propagation is very slow and less reliable for maintaining the unique monstrous form.
Propagation By Stem Cuttings
This is the most common and successful method.
- Using a clean, sharp knife, cut off a healthy stem segment. Choose a piece that is a few inches long.
- Place the cutting in a dry, shaded spot for 5-7 days. This allows the cut end to form a hard callus, which is essential to prevent rot when planted.
- Once calloused, plant the cutting about an inch deep in a small pot filled with dry cactus mix.
- Do not water immediately. Wait another week, then give it a very light watering. Only water again once the soil is completely dry. Roots should begin to form in a few weeks.
Propagation By Offsets
Sometimes, the plant will produce small offsets or “pups” at its base.
- These can be carefully separated from the main plant using a clean tool.
- Let them callus just like a cutting, then pot them up following the same process.
- This method is often faster than stem cuttings as the offset is already a established small plant.
Common Problems and Solutions
Even with good care, you might encounter an issue. Here’s how to identify and fix common problems.
Pests And Diseases
The Ming Thing cactus is relatively pest-resistant but can occasionally be bothered by common succulent pests.
- Mealybugs: Look for small, white, cottony masses in the crevices between stems. Dab them with a cotton swab dipped in rubbing alcohol to kill them on contact.
- Scale: Appear as small, brown, bumpy spots stuck to the stems. Scrape them off gently or use horticultural oil.
- Fungus Gnats: Small black flies that indicate soil is staying too moist. Let the soil dry out completely between waterings and use sticky traps.
- Root Rot: Caused by chronic overwatering. Signs include a plant that is softening, turning yellow or black, and collapsing. If caught early, you can cut away all rotten tissue, let it callus, and replant in fresh, dry soil.
Environmental Issues
Most problems stem from light or water issues.
- Sunburn: Appears as bleached, white, or brown crispy patches on the side facing the sun. Move the plant to a spot with slightly less intense light or provide filtered sunlight during the hottest part of the day.
- Etiolation (Stretching): The stems become thin, pale, and stretch unnaturally towards the light. This condition is permanent. Provide more direct sunlight to prevent further stretching. You can propagate the normal-looking top growth later.
- Soft, Mushy Stems: Almost always a sign of overwatering and the onset of rot. You need to act quickly to save the plant by cutting above the rot.
- Shriveling: While some shriveling can be normal during drought, extreme or persistent shriveling after watering can indicate root rot (the roots are dead and can’t take up water) or simply that the plant is severely dehydrated and needs a thorough soak.
Design and Styling Ideas
The sculptural quality of the Ming Thing cactus makes it a fantastic design element. Its form is it’s own decoration.
Complementary Plants
Pair your Ming Thing with other plants that share its love for bright light and infrequent water. This creates a harmonious and low-maintenance display.
- Other sculptural cacti like Golden Barrel or Bunny Ears.
- Rosette-forming succulents like Echeveria or Sempervivum.
- Vertical contrast plants like a Snake Plant or a tall, thin Euphorbia.
- Trailing succulents like String of Pearls or Sedum morganianum can soften the edges of the pot.
Pot And Container Selection
The pot you choose can enhance the plant’s artistic form.
- Minimalist: A simple, unglazed terracotta pot highlights the plant’s natural beauty and promotes health.
- Modern: A clean, geometric pot in white, black, or concrete gray makes a bold statement.
- Colorful: A pot with a single, bold glaze color can create a striking contrast with the blue-green stems.
- Always ensure the pot has drainage. You can place a plain nursery pot inside a more decorative cache pot if needed.
Frequently Asked Questions
Here are answers to some of the most common questions about the Cereus forbesii ‘Ming Thing’.
Is The Ming Thing Cactus Toxic To Pets?
According to the ASPCA, cacti in the Cereus genus are not listed as toxic to cats or dogs. However, the physical spines can obviously cause injury if a pet tries to bite or brush against it. It’s best to place the plant out of reach of curious animals to avoid any accidents.
How Fast Does A Ming Thing Cactus Grow?
It is considered a slow-growing cactus. In ideal conditions, you might see a few inches of new growth per year. Its slow habit is part of what makes it a great, long-term houseplant that won’t quickly outgrow its space.
Why Is My Ming Thing Cactus Turning Yellow?
Yellowing is a serious warning sign. The most common cause is overwatering and the beginning of root rot. Immediately check the soil and the firmness of the stems. Other causes can be severe nutrient deficiency or, less commonly, too much intense, direct sun (sunburn). Assess your watering habits first.
Can I Grow Ming Thing Cactus Outdoors?
Yes, but only if you live in a suitable climate. It thrives outdoors year-round in USDA hardiness zones 9b to 11b, where temperatures rarely, if ever, drop below freezing. In cooler zones, it can spend the summer outdoors in full sun but must be brought inside well before the first frost in autumn.
What’s The Difference Between Ming Thing And Totem Pole Cactus?
They are often confused due to their similar monstrous, spineless forms. The ‘Totem Pole’ cactus (Pachycereus schottii f. monstrosus) is a different species. It tends to grow taller, has smoother skin with more pronounced, bumpy ribs, and rarely, if ever, branches. The Ming Thing stays more compact, has shorter spines, and branches frequently into a clustered form.