The substance that appears to be cotton fibers is actually a fine wax made by adult cochineal scale insects, and the little black specks may be their nymphs. On cholla (Cylindropuntia spp.) and prickly pear (Opuntia spp.) cactus, it is typical in this region. The white beards that resemble those on other cacti, such as the Peruvian old man (Espostoa lanata) and Peruvian old woman (Espostoa melanostele), are not an insect byproduct but rather typical, healthy changed tissues. Landscape chollas and prickly pears have a white waxy coating produced by cochineal scale that helps shield these actual bugs from predators and insecticides.
I’ve seen prickly pear pads covered in that white fluff almost entirely. Mild infestations, like the ones Doa Ana County Extension Master Gardener Dael Goodman and I saw at in Las Cruces earlier new week, are more typical. In New Mexico, there are multiple native cholla and prickly pear species. There are numerous of them in the Goodmans’ front yard, and we immediately noted that some species were more affected by the cochineal scale than others.
Topical pesticides, especially natural ones like petroleum oils and insecticidal soaps, are unlikely to be effective no matter what time of year it is if the insects are shielded by a white covering. Also, keep in mind that the ultimate goal isn’t to completely eradicate cochineal scale from your garden—partially that’s impossible—but rather to control the populations of insect pests until beneficial insects come to the rescue.
You will be shocked to see a bright red liquid that seems to appear out of nowhere if you squeeze a glob of the white goo that has healthy females hidden inside. Carmine, a natural dye used for millennia to color textiles and create artwork, is produced inside the bodies of cochineal scale insects. Because this carmine component is also utilized in red foods and cosmetics like sausages, lipstick, pie fillings, and vividly colored alcoholic beverages, check product labels for it. Before the firm converted to an artificial dye in 2006, it was used to create the vibrant color of Campari liquor, but a new generation of craft distillers and other producers are increasingly adopting it as a substitute for synthetic red components.
Goodman and I attempted to film the flowing red fluids squeezing the white tufts on her prickly pear pads with a small stick, but we hardly noticed any redness. The female cochineal population may be declining at this time of year, or those specific tufts may be so old that the residents have long since disappeared and have only left that waxy material behind. We’ll give it another go with a fresher sample in the summer.
Six cholla species and seven prickly pear species are covered in Robert DeWitt Ivey’s stunning reference work Flowering Plants of New Mexico. There are five yellow-flowered prickly pears in that group. Identification might be aided by paying close attention to the pad sizes and spine specifics. If you intend to approach closely, make preparations and carry tongs.
At the Agricultural Science Center in Los Lunas, Marisa Thompson, PhD, is the Extension Horticulture Specialist for New Mexico State University.
What crops do cacti produce?
The prickly pear cactus, Opuntia ficus-indica, which grows in USDA zones 4 to 10, has edible nopales and fruits. The fruits are also known as Indian fig, cactus apple, and tuna. According to Fine Gardening, the fruit is frequently a lifeless red color, and the fruit inside is pink. Different-colored fruits can be found in some cultivars, though. According to John Vena Specialty Produce, the green cactus pear, for instance, has bright-green skin with yellow or green flesh, and the yellow cactus pear has yellow skin and orange flesh.
You can consume prickly pear fruit uncooked or prepare juice, jelly, or syrup from it. The syrup can be poured over chicken or fish or used in a number of food and beverage dishes, including prickly pear margaritas. You can consume the cacti’s pads uncooked or cooked.
Because the fruit and the pads carry glochids, or tiny spines, they should be removed carefully. To harvest the fruit from the cacti, use tongs or something similar while wearing gloves and long sleeves. Before opening the fruit, take sure to remove all of the glochids.
What on my cactus are those fluffy creatures growing?
We apologize, but Mr. Smarty Plants needs some time to catch up after receiving an overwhelming amount of mail. Soon, we hope to be taking new inquiries once more. I’m grateful.
ANSWER:
Before, Mr. Smarty Plants responded to a query regarding cholla cactus cochineal bug management (similar to your prickly pears). What Larry and Brigid Larson wrote is as follows: Cochineal feeding can harm the cactus and occasionally result in the host plant’s death. The Cactus Doctor talks about getting rid of cochineal. Their advice is as follows: 1) A hose with a power nozzle attached to the end. 2) It was advised to clean the affected areas with insecticidal soap or unscented dish soap to treat them if the infestation gets out of hand. Neem oil was also mentioned as a possible natural remedy.
In response to another Mr. Smarty Plants query about cochineal bugs on prickly pear cactus, Nan Hampton provided the following response. (As you can see, this is a common query.) It sounds like cochineal bugs are infesting your cactus (Dactylopius sp.). They are cactus-eating small scale insects. They generate fluffy white wax that covers their body as they consume the cactus and shields them from predators as well as the weather (especially drying out). The fluffy wax also acts as a sail or balloon to carry the bugs to a fresh cactus patch in the breeze. The carminic acid that the bugs create aids in shielding them from predators, particularly ants. Indigenous peoples of southwestern North America, Central America, and subtropical South America have been using this bug’s carminic acid for centuries—possibly millennia—to synthesize a vivid red dye that they utilized to create exquisitely colored fabrics. Cochineal bugs were formerly only found in the New World. The cochineal bug spread around the world when European explorers came to a place and saw the stunning red cloth made by the locals. Although they have also been employed to help reduce cactus populations, the need for cochineal bugs decreased when a synthetic red color was created. But recently, there has been a resurgence of interest in cochineal bug cultivation for red dye because it was discovered that synthetic red dyes can have harmful side effects on health. Today, food coloring and cosmetics both employ the bug-derived dye. Because of this, managing cochineal bugs hasn’t really been a top concern, and as a result, I haven’t been able to discover a lot of information on managing them. If you only have a minor infestation, I advise scraping them off (slowly, to avoid the cactus spines) and throwing them away. They might also come off with a water under pressure wash. To ensure that you don’t harm your cactus, test a tiny area first. Then, collect and get rid of any insects that you wash off the cactus.
The University of Arizona Extension also suggests a similar set of remedies in a publication on cactus diseases.
The usage of insecticides was discussed on multiple websites, and Wikipedia included several natural predators: “The population of the bug on its cacti hosts can be lowered by a variety of natural enemies. Insects appear to be the most significant group of predators. Numerous parasitic wasps as well as predatory insects including ladybugs (Coleoptera), different Diptera (like Syrphidae and Chamaemyiidae), lacewings (Neuroptera), and ants (order Hymenoptera) as well as pyralid moths (order Lepidoptera), which kill cacti, have all been identified.”
Here is more information on the intriguing world of the Dactylopius coccus cochineal scale insect and the carmine dye that was highly sought for fabric dyeing in the 15th century.
What kind of cacti bear fruit?
Although it is native to Mexico, the nopal cactus is also known as prickly pear cactus or Opuntia. Cactus fruit are known as tunas in Spanish. The thick skin of the fruit is covered in tiny spines, and it develops on the rounded edges of cactus paddles. You may cut them open to reveal a delicate, juicy inside that is filled with several dark, rounded seeds.
Why do the bugs on my cactus exist?
Cacti and succulent houseplants occasionally experience insect pests, but the majority of issues are bacterial or fungal illnesses brought on by overwatering. Scale, mealy bugs, and root mealy bugs are the three most prevalent pests. Pests like spider mites and fungus gnats are less frequent.
What causes the pups on my cactus?
Because it doesn’t include the transfer of seeds, cactus pup propagation is a vegetative method of plant propagation. You employ an offset, which is produced asexually by the parent plant, to create a new plant.
The pup develops as a little clump that is simple to separate from the parent plant and use to create a new cactus. This is most likely the simplest way to spread cacti. The majority of the time, it is rather simple to separate the pup from the parent plant, and it will establish itself fairly fast and frequently with success.
Most of the time, the pups will have a limited number of their own roots. Sadly, not all cacti species can give birth to pups. Make sure your garden’s cactus species can produce offsets before choosing this method of propagation.
Types of cacti that grow pups/offsets
Offsets are produced by many cacti of the barrel and rosette varieties. Large barrel cacti typically produce the largest pups, making them one of the greatest succulent species to multiply through this technique. The barrel cactus has a special technique of giving its offsets nutrients and water while protecting them from the harsh sun.
The majority of pups develop at the plant’s base, although some may also appear throughout the stem or even on the pads. Any of these offsets can be taken out and rooted in a container so they can develop into new plants.
As long as you make clean incisions and give the offsets time to calluse before rooting, propagating cacti from offsets or pups is simple and quick.
In general, cacti plants that you should think about growing from pups ought to be big, rounded, and clump-forming. The offsets must be at least the size of a tiny ball, and the parent plant must be substantial.
Does cactus produce fruit?
We’re not the first to speculate that the edible cactus would become the new unicorn food, given the recent trend for succulents and the move toward crops that can withstand drought.
Sure, we know nopales, the de-spined pads of the prickly pear cactus. However, almost all cacti also produce edible fruit that is less difficult and, let’s be honest, less slimy to consume. If you come across one, simply take a bite out of it: They are the Southwest’s answer to the abundant summer blackberry crops of the Northwest.
Clark Moorten, a second-generation cactus grower, is arguably the expert on edible cacti: “I always thought I was born with stickers in my butt,” he explains in a recent phone conversation. His voice evokes the harshness and romance of an era of sepia-toned films because of his little accent, clipped but laconic sentences, and laconic delivery. For 36 of his 74 years, Clark has been managing the Moorten Botanical Garden and Cactarium in the heart of Palm Springs.
The Garden is Instagrammable despite having been constructed in the 1950s, and like Clark, this is part of what makes it so charming. More than 3,000 different desert plant species may be found in the collection of the Cactarium, ranging from exotics like the three-pronged Saguaros, which are symbols of the American southwest and Mexico, to more common ones like the two-story-tall Pachypodium succulent. Even though he prefers meat and potatoes over vegetables, Moorten claims that the majority of the cacti in his collection yield edible fruit, such as prickly pears and dragon fruits.
He claims that a small Mertillo will grow thousands of tiny fruits on it. ” They resemble blueberries in appearance.
But where should you begin if you want to sample a cactus but aren’t near a Cactarium? Whether you can recall it or not, you’ve undoubtedly already eaten agave azul. One of the elements of tequila is its leaves. The trendy cousin of tequila, mezcal, is produced from a variety of other agave species. Here are a couple more that you might come across while shopping, dining, or taking a walk in the desert.