I’ve been attempting to get rid of this dreadful plant from my yard for months. I’m from South Florida. Yes, Home Depot advertises the product as “Florida Friendly” and “drought resistant”. Florida tolerant? NO WAY! resistant to drought? Totally. In their comments on this plant, they should note: Additionally resilient to the following To try to get rid of this dreadful plant from the yard, I used RoundUp, vinegar, weed screen, All Vegetation Kill, table salt, bags of rock salt, 2 broken hoes, and months of labor. Shame on any nursery that offers this for sale without disclosing that it is highly invasive. Home Depot has refused to stop selling it despite appeals from our local extension office. Plant another item! I doubt you will ever be able to get rid of it until you remove the WHOLE area (oh, I forgot to mention – plan to dig a foot to three feet deep, or even more) and quarantine! This stuff will spread into all your other plants, grass, and tree roots! By the way, if you intend to erase the material, I believe it becomes enraged and resurfaces with a vengeance. I’ll keep experimenting and report back to you on what, if anything, eliminates the ruellia infection in our yard. If I don’t get back to you, I’ve probably been unsuccessful and am pulling rhizomes out of the ground. Think of yourself as LUCKY if you don’t have this in your yard. This plant is classified as invasive by experts for a reason. The WORST plant I have ever had in our yard, in my opinion. I might publish pics of my mess later. PS: Save your money and avoid purchasing “All Vegetation Kill” from Home Depot. In fact, it seems to fertilize the material and cause overnight growth. Although I don’t have any other cause to criticize Home Depot online, if THEIR OWN “All Vegetation Kill” doesn’t even slightly harm this plant, how can they possibly dare to sell it to the average consumer?
How can invasive Mexican petunias be eliminated?
You may be interested in learning how to get rid of Mexican petunias if you reside in one of the nine states where Ruellia is most prevalent. Mexican petunia removal is actually a long-term undertaking that calls for careful monitoring of the garden or lawn where they have taken over. You must be fully committed to this war because the Mexican petunia’s seeds can continue to grow for years after the mature plants have died off.
Mexican petunia can be pulled, but if you don’t get the full root or miss a sprout, you’ll have to go through the whole process again soon. The best option is to use glyphosate to destroy the plants from the ground up by spraying it on the foliage. After the initial application, regrowth is to be anticipated, so be ready to spray once again whenever you see the plants putting forth new leaves.
You can prune the plants by hand if your Mexican petunias are in the lawn or another delicate area where applying herbicides might not be the best idea. Dispose of the vegetation carefully to prevent any danger of it growing back. Since you’ll only be removing the top layer of the plant, you’ll need to cut it again each time it begins to leaf out in order to make the plant burn up its energy reserves and exhaust its food supply.
How can you prevent the proliferation of Mexican petunias?
A yard or garden bed can be swiftly overrun by Mexican petunias. Several measures can be taken to prevent Mexican petunias from encroaching in other places.
To slow down and restrict the spread of the plant, bury wood planks approximately six inches thick around it.
A larger Mexican petunia should be planted in a pot and placed in an established garden. Before the plant needs to be repotted, the roots will expand within the pot and let it to blossom wonderfully for years.
The plant will be forced to develop as a ground cover without encroaching on other parts of the garden if it is placed in a walled area far from other plants.
Mexican petunia seeds can disperse, so if you find a sprout in a spot where you don’t want the plant to grow, pull it out as soon as you can to prevent it from setting roots and creating a problem.
Do Mexican petunias love acid?
These plants grow quickly, growing to be 3 to 6 feet tall and the same diameter.
Remember that while a young purple showers plant may not be full, with time and through clumping colonies, the plant fills out and becomes lush.
Although it is classified as an invasive species, we have cultivated it in Florida’s landscape for many years without ever having to worry about the plants growing out of control.
This plant’s leaves can grow up to 12 inches long. The leaves typically stay short when cultivated in arid conditions, though.
Flowering and Fragrance
A flowering plant called a petunia ruellia produces exquisite petunia flowers that are typically violet in color.
While the petunia-like flowers only persist for approximately a day each, the blossoming season—which lasts from early summer to fall—is quite extended.
Neither the plant itself nor the flowers have a distinguishing scent. However, it does succeed in luring hummingbirds, butterflies, and even bees to the garden.
Light & Temperature
Purple showers thrive in full sun, but they may also tolerate some shade. They generate more flowers the more sunlight they receive. These plants thrive in the summer heat and can even withstand a drought.
They struggle in the cold. It is recommended to relocate Mexican petunias out of the path of the cool winter breeze as the temperature begins to fall.
Watering and Feeding
The resilient Mexican petunia plant can withstand both drought and flooding.
The best strategy is to water only enough to maintain a constantly moist soil.
Young petunia ruellia simplex require frequent watering, despite the fact that these plants are robust and can go for extended periods without water.
Avoid overwatering during the colder seasons and only apply moisture when the soil is clearly dry.
These plants can thrive without further fertilizer support. You only need a spoonful of 10-10-10 fertilizer if you still wish to feed your plants.
Soil & Transplanting
Use healthy soil with good drainage for the best growing conditions. Also take into account the soil’s pH level.
Although these plants can handle alkalinity, neutral or slightly acidic soil usually works best for them.
When the weather is warm enough for the plant to settle and flourish, transplant in the early spring.
Grooming and Maintenance
These plants are quite self-sufficient and do not need a lot of additional care when the correct circumstances are present.
NOTE: Mexican Petunia rhizomes allow for easy spreading. Select non-invasive cultivars to maintain control.
Pull out part of the branches if you feel that these purple flowers are encroaching on your landscape.
To keep plants healthy and preserve a pleasing appearance, trim them frequently. Also, remember to trim any leaves that have been scorched or damaged.
Because of its low maintenance and lovely blossoms, Texas A&M University named Dwarf Ruellia ‘Katie’ a Texas Superstar.
Why are my Mexican petunias covered in a white substance?
The reference books don’t appear to provide any information on the biology of this weevil. The larvae or grubs most likely consume soil roots as food, but no observations have been performed to provide any insight into that element of its life cycle. This is most likely a good thing because it shows that the grubs haven’t yet done much harm. The grub stage of many weevils is when the most harm is done. For instance, in the Midwest, the black vine weevil’s grubs wreak havoc on the roots and main stems of taxus and rhododendron plants.
Although the adult weevils’ foliar munching may not be aesthetically pleasing, it shouldn’t do much harm to plants. Sprays using pyrethroid-containing products like bifenthrin or cyfluthrin have effectively knocked down the weevils if the damage from shredded leaves exceeds your aesthetic threshold. Use only items designated for landscape ornamentation. Again, be sure the label says citrus is a target plant if you are spraying citrus.
Some people find that walking around your yard with a pail of soapy water is a more fruitful strategy. Watch the little critters vanish behind the bubbles by placing the bucket beneath the attacked foliage and tapping the plant branches.
I’ve only heard of grubs gnawing on the roots of longan and lychee plants. Therefore, if your trees aren’t developing well, you might wish to look for grubs. For images and more biology, see this info sheet:
There are a number of new millipedes that have started appearing in mulched beds and inside houses. Since a few years ago, the red millipede (Trigoniulus corallines), the yellow-banded millipede (Anadenobolus monilicornis), and a single report of the enormous African millipede have all been there. Although millipedes are thought to be helpful, people become annoyed when they come inside to spend time with you after climbing up outside walls.
Have you ever watched a millipede crawl around the ground? How do they make each of those legs function in turn? Each body segment has four legs. per millipede, and at least 50 segments. You can find a millipede fact sheet here:
If they are getting inside, seal the cracks and crevices with caulk or repair them since, if millipedes can get in, you can guarantee ants, lizards, and other animals can, too. Ortho Bug-Geta Plus has two insecticides integrated into a bait that may be appealing to millipedes, although this is yet speculative. Try using it if you feel it is required.
Another natural phenomenon that appears on Mexican petunia has stirred up some debate (Ruellia species). People are unsure if white fuzzy spots on plants’ leaves and stems are caused by powdery mildew or pesticide residue.
In actuality, it is neither. Erineums are a specific kind of growth deformation brought on by minuscule mites known as eriophyid mites.
Even though there is some leaf distortion, I doubt treatment is ever necessary. After all, this is a plant that seems to thrive when the herbicide Roundup is applied! But perhaps knowing more about this plant, which is sometimes derided as invasive, would prevent some people from spending their money and effort using fungicides that aren’t needed.
Why worry about an aggressive plant that shouldn’t be used, some landscapers questioned. I told them not to become upset when they saw the seedless variety “Purple Showers” in the landscape because it exists. Then they informed me that the plant’s flopped vegetative growth habit and runners, which encourage small plants to expand into substantial stands of gorgeous blue flowered bushes, already make it aggressive.
In addition, I captured a photo of the malachite butterfly—a reported host plant—that I have ever seen fluttering over my Mexican petunias! Visit my blog to learn more if you want to:
What consumes Mexican petunias?
Petunias attract attention, though not usually in a good way, with their lavish flowers, brilliant colors, and alluring scent. They are a gardener’s dream and relatively simple to maintain, yet they may host strangers! What is eating your petunias, you may question if you grow them and have seen holes in the leaves or stems without blooms?
Many insects, including caterpillars like tobacco budworms and variegated cutworms, enjoy eating petunias. They are also consumed by aphids, whiteflies, slugs, and snails. Petunias are also consumed by animals like rabbits, chicks, squirrels, mice, deer, and mules. To prevent this from happening to your plants, there are natural and secure methods.
Now that you are aware of the various animals that consume petunias, let’s look at this in more detail below. We’ll talk about how to stop it once it starts as well as how to stop it before it starts. We will also go through eco-friendly, safe methods for getting rid of these pests.
So please continue reading if you’re interested in finding out more about what is consuming your petunias and how to stop it.
Mexican petunias are they forbidden?
Mexican petunias can bring beauty to your garden if you take care to select cultivars that are not invasive and that you can keep up with and manage.
blue-purple petunias? Mexican petunias may initially be mistaken for regular garden flowers.
Ruelliasimplex, a fast-growing perennial with green to purple stems and green leaves, are what Mexican petunias are in reality. This plant’s invasive, wild version is so aggressive that some states have prohibited it, while others have put it on a watch list of invasive plants. Mexican petunias are categorized as “highly invasive” by the state of Florida.
Ruellia simplex, also known as R. tweediana, R. brittoniana, R. coerulea, and R. malacosperma, is a plant native to Mexico and western South America that can withstand freezing temperatures in USDA hardiness zones 8 to 11. Even though the plants were given their correct name by a German botanist in 1879, most horticulturists today call them R. tweediana. Mexican bluebell, hardy petunia, wild petunia, Britton’s wild petunia, and perennial petunia are examples of common names.
Mexican petunias may thrive in a variety of environments but prefer moist or marshy soils, such as those found at the edges of ponds and lakes or in moist woods. In dry soils, they can endure drought and even full sun.
The plants’ colorful, spectacular blossoms are fleeting, yet they bloom for a long time, starting in early spring and lasting until frost. The shrubs have an approximate width of one foot and a height of one to four feet.
Most of these lovely, hardy plants have the unfortunate drawback of spreading out of control and displacing good plants.
Invasive Mexican petunias develop thick, horizontal roots that extend above and below the surface of the earth, making them challenging to uproot. Even small portions that are missed can reseed. When ripe, seed capsules on the plants open and release seeds all over the place. Years after the plants have been eliminated, the seeds may still be present in the soil and begin to grow.
Even worse, when the seeds are moist, a mucous-like goo forms. They adhere like glue to dry soil once they are dropped there.
Mexican petunia varieties that gardeners can enjoy and cultivate responsibly have been developed by breeders. Because they are sterile cultivars, “Mayan Purple” and “Mayan White” do not produce seeds that self-sow.
‘Mayan White’
Mexican petunias are invasive, however “Mayan White” and its relative “Mayan Purple” are sterile substitutes.
Home Depot locations in Florida presently carry “Mayan Purple” and “Mayan White.” By 2014, the breeder, Rosanna Freyre, hopes to have the cultivars more widely accessible. This may involve cooperating with a North Carolina mail order business and a Georgia company with statewide distribution.
Another possibility is “Katie.” Due to its lovely blossoms and simplicity of maintenance, Texas A&M University has named this less aggressive, dwarf Ruellia a Texas Superstar.
‘Katie’ has blooms that are purple, pink, or white and grows to a height of about 6 inches. However, because it is fertile and spreads through seed, researchers from the University of Florida and the Institute of Food and Agricultural Services do not advise using it.