Is Permethrin Safe For Houseplants

A mixture of three compounds known as permethrin is based on the chemical pyrethrin, which is present in the chrysanthemum family of flowers. The natural insecticide pyrethrin is produced by chrysanthemums. The percentage of each component in the spray compared to that in individual plants differs somewhat because permethrin is the synthetic version of this natural substance. Because sprays employ a constant ratio rather than the ratio that can change in different plants, you always know what you’re getting.

The majority of permethrin garden sprays, though, do not contain only permethrin. The active substance is normally methrin, but another chemical is added to lengthen its half-life and increase its potency.

How is it used?

Spritz forms of permethrin are the most common, though concentrations are also offered. Permethrin sprays are most frequently used on clothing, particularly to repel mosquitoes during strenuous treks or gardening sessions. When pests arrive on the material, it soaks into the fabric and kills them.

Any time you use a pesticide, it’s crucial to read the directions. Sprays with permethrin aren’t an exception. While some permethrin sprays are created primarily for use on textiles, others might not be suitable for use indoors or might be intended more for sprinkling the entire grass than for use on garden plants.

What pests is it effective against?

Ticks, mosquitoes, lice, mites, cockroaches, fleas, and flies are just a few of the many insects that permethrin is effective against. It causes paralysis and death in affected creatures by interfering with their neurons. On touch, it achieves this, preventing pests from ever attacking your plants in the first place. Although it is unsafe for cats, it is even used to treat mosquito nets and is a key component in some dog flea collars.

What are the drawbacks and limitations?

Permethrin can harm animals besides pests, including cats, bees, and other pollinators. If enough of it contaminates a body of water, it can also harm fish and other aquatic life. However, there are several measures you can take to lessen the bad effects. When permethrins are used on indoor plants, for instance, less of it may end out in rivers and less pollinators will be exposed to it. In addition, if you have a cat, keep your plants out of reach of the animal.

A pollinator net can be used to keep pollinators away from outdoor plants that you intend to treat with permethrins. This isn’t a surefire strategy, but you might be able to cover the blooms with a bowl and spray the leaves specifically.

Did you have your houseplants outside this summer? Did you bring any new plants home? Did you repot any plants recently?

Our customers are sending us a ton of samples of houseplant leaf with various bug issues throughout this chilly winter. Homes with low humidity make ideal habitats for spider mites and other insects. Check for insects on your indoor plants! Use a magnifying glass to examine your plants. Examine the branch axils and undersides of leaves in great detail.

Read the label’s instructions and warnings completely before using any pesticides. Despite the fact that a cure is described as organic or natural, recommendations and safety precautions still need to be followed! Pay close attention to the ingredients list on a label! Two pesticides that have identical spelling and pronunciation are a case in point. A synthetic pesticide called permethrin can be found in many items marketed for use in the home and garden. Permethrin can remain in the environment for up to four weeks, depending on the concentration. A natural, organic pesticide called pyrethrin is created from pyrethrum daisy extracts. Pyrethrin kills instantly and with no aftereffects. NOTE: The labels of both insecticides contain cautionary statements.

Symptom: Plants leaves become yellow and dirty looking, then eventually dry up and drop. Fine webbing may be visible under leaves.

Cure: Use this method to find spider mites: Put a white piece of paper or a plate underneath a branch, then tap it firmly. Since the mites are often red and around the size of a pinhead, they will be simple to spot. Shower the plant; use a sponge to remove the leaves, and give it a good rinsing. Dry conditions are ideal for spider mite reproduction. Using a vaporizer or misting humidifier, raise the relative humidity surrounding your plants. It will also assist to place the plants in a saucer with gravel and water.

Spray the plant with insecticidal soap, Bonide’s Bon Neem (derived from neem tree seeds), or Indoor Pharm for an organic/natural remedy (made from plant oils) Every seven to ten days, repeat the procedure. Check the plant every week!

Conventional Treatment: Move the plants to the garage or, if possible, outside and spray them with Ortho’s Orthonex or Green Thumb Flying Insect Killer (with Permethrin). Bring the plants back inside. As directed on the label, repeat treatments.

Diagnosis: Mealy BugsCoccusheporidum

Treatment: Keep afflicted plant isolated; these pests are difficult to eradicate! Mealy insects consume surplus plant sap and excrete it. Molds can develop on the surface of this clingy coating, which is known as honeydew. As many pests as you can remove with rubbing alcohol and a toothbrush or cotton swab.

Treatment that is organic or natural is to thoroughly spray the plant with insecticidal soap or Houseplant Pharm and repeat in seven days. Maintain weekly inspections!

Conventional Treatment: Apply Bonide’s Houseplant systemic granules to the soil first. Take the plant outside once more, this time to a heated adjoining garage, and spray it with Orthonex (product contains both insecticide and fungicide). Reintroduce the plant indoors and keep it separate from other plants. Recurring therapy in 10 days. Note: Use the systemic granules and spray with the organic/natural remedies described above if you can’t spray the plant outside in the garage. Keep in mind that these animals are difficult to control, therefore do weekly inspections. Keep the plants isolated until the issue has been resolved. Maintaining inspections is essential to avoiding situations where the plant may have to be destroyed due to significant infestations.

Symptom: Leaves and stems are covered with small, oval shaped pimples that squash easily. Honey dew may coat the leaves (see Mealy Bugs). Plant lacks vigor, eventually dropping leaves.

Cure: Scale (Crawler) eggs and larvae hide under their mothers’ shells. Using a sponge or brush, scrub away as many pests as you can before thoroughly rinsing with a mix of 1 tablespoon dish soap and 1 cup warm water.

Use Bonide’s All Seasons Oil on plants that can handle horticultural oils as an organic or natural remedy. Use Indoor Pharm or insecticidal soap to spray.

Conventional Treatment: Apply Bonide’s Houseplant Systemic Granules to the soil. Use Orthonex or Bonide’s Eight ready to use, which both include water-based Permethrin, to mist the plants (see Mealy Bugs).

Symptom: Leaves turn a molted yellow, cure and drop. Small white insects flutter rapidly around plants. White specs resembling dandruff are found on the undersides of leaves. Honeydew may coat the leaves and stems.

Cure: Whitefly eggs that were laid in the soil of your indoor plants throughout the summer may hatch inside in the late winter. Set the nozzle to a stream and spray the undersides of the leaves up and away from the plant while watering plants outside. Whiteflies have soft bodies; as a result, some will be eliminated, and the eggs and remaining whiteflies will be blown into the lawn. Insects like ants will tidy up after you!

Natural/Organic Treatment: Place sticky traps. Using these traps to check insect issues early on is a wonderful idea! Apply insecticidal soap, Bonide’s Bon Neem, or Bonide’s Pyrethrin to the plants using Rootone. Whiteflies have a 3-day hatching cycle. As directed, repeat the treatments.

Traditional Therapy: Apply Houseplant Systemic Granules to the soil. Spray with Orthonex or Eight ready to use. (For suggestions on spraying, see Mealy Bugs) Repetition is required.

Symptoms: Small flies (resembling fruit flies) slowly buzzing around areas near your houseplants and often in your washrooms. Their larval, little worms about 1/8 of an inch resembling grubs with white bodies and black heads move in the potting soil near the stems.

Cure: These pests can be found in poor potting soil or dirt that has been left exposed outside.

Sewer flies, sometimes known as fungus gnats, prefer moist, damp environments to thrive. Before rewatering, allow the top third of the plant’s soil to dry. Make sure the saucer is empty. It is impractical and unsafe to spray insecticide on these gnats while they are in flight. Around your plants, set up some sticky traps.

If you notice gnats in your bathrooms, pour bleach or toilet cleanser into the sink and bathtubs. To keep the air from escaping, plug the holes with a rag.

Sewer flies love the spills because they create the ideal nesting grounds. This issue could arise months after the bugs have left the area around your houseplants!

Repotting could be beneficial, however some larvae might be tangled up in the soil clump around the roots. Avoid digging up the dirt around the roots as this could harm the plant. Put fresh potting soil in the container, and wash it with a solution of 1 part bleach to 8 parts hot water. Water the plant after repotting, then generously sprinkle Diatomaceous Earth on top of the dirt in the pot and cover with Saran Wrap (reapply after watering). After coming into touch with the diatomaceous earth, the gnats and larvae will be sliced up and dehydrated.

Utilize Bacillus Thuringienis Israelensis to dispose of the larvae. In a gallon of warm water, add 1/2 a packet of Mosquito Beater granules and shake well. If using Mosquito Dunks, use 1/4 of the wafer. The grains should dissolve and the water should reach room temperature in a day. Shake the mixture well before soaking the soil of the diseased plants. For a week, use this combination to water your plants.

Are plants kept indoors safe against pyrethrin?

The Pyrethrum daisy (Chrysanthemum cinerariifolium), from which the insecticidal substance is derived, is referred to as pyrethrum. This perennial daisy, often known as Dalmatian chrysanthemum, has a lot of harmful to insects compounds called pyrethrins. Pyrethrum is permitted for usage on certified organic farms in the United States due to its direct extraction from a plant and the fact that it is thought to be harmless to humans.

About Pyrethrum

The “P” words on pesticide labels will become very perplexing once you start reading them. Typical constituents are:

  • The term “pyrethrum” refers to a pesticide made from Pyrethrum daisies.
  • The pyrethrum’s active ingredients are called pyrethrins. Pyrethrum and “pyrethrin are frequently used synonymously.
  • Synthetic pyrethroids: pyrethrins. They are not permitted for use in organic gardening because they are much more poisonous than natural pyrethrins.
  • Permethrin is an illustration of a synthetic pyrethroid; do not mix it with the real thing!

Pyrethrum Facts

Consider these characteristics of pyrethrum and pyrethrins:

  • Kills Beneficial Insects: The majority of insects are extremely poisonous to pyrethrum. This means that while it works well against pests, it is also lethal to the helpful insects that pollinate your veggies and aid in the fight against pests.
  • Best for Spot Spraying: Like any potent substance, pyrethrum should only be sprayed directly onto plants that are severely afflicted. You shouldn’t use it to completely saturate the garden.
  • Other Pyrethrum Ingredients: It can be challenging to find pure Pyrethrum. In fact, none of the garden centers in my area had it. Pyrethrum works well for “knock-down, which implies that when sprayed with it, flying insects will strike the ground. They can revive, though, if the dosage isn’t high enough. Because of this, pyrethrum may be combined with other substances to boost its potency, some of which may not be organic or harmless. To increase the potency of pyrethrins, piperonyl butoxide (PBO), a hazardous non-organic compound, is frequently added. Additionally, neem oil or insecticidal soap are frequently combined with it. Make sure you’re obtaining just organic foods by reading the labels.
  • Safety for People and Animals: Pyrethrum is marketed as “non-toxic. Pyrethrum is not completely safe, although it is one of the least hazardous pesticides available. However, as it is poisonous to fish and amphibians, it must be kept out of storm drains and waterways.
  • Benefits of pyrethrum: Pyrethrins degrade quickly in sunshine and are biodegradable (within a few days). One of the reasons they’re thought to be somewhat safe to use around food crops is that they don’t linger in the soil or on your vegetables.
  • Growing Pyrethrum: Pyrethrum daisies can be grown in your own yard to ward off pests. You can even harvest and dry the flowers to make your own insecticidal powder by grinding them. They have exquisite white daisy blooms with yellow centers, and they are pretty plants.

Which insecticide is safe to use on houseplants?

Aphids are tiny, soft-bodied, pearshape insects that range in size from 1/16 to 1/8 inches. Normally green, they can also be pink, brown, black, or yellow. Because of their waxy coats, some aphids seem fuzzy or powdery. In adults, wings are optional.

Aphids are typically seen eating on the undersides of leaves or fresh growth. Some consume roots. They ingest plant sap, which causes the leaves to yellow and deform. Additionally, new buds may form malformedly and growth may be impeded. A substance called honeydew, which is excreted by aphids as they feed, makes leaves glossy and sticky. On the honeydew, sooty mold fungus may develop, leaving ugly dark blotches on the plant’s surfaces.

Control: For smaller infestations, it may be feasible to handpick the insects, spray them with water, or wipe them down with a cotton swab dipped in rubbing alcohol. Spray made with insecticidal soap is another option. The treatment will typically need to be administered more than once. Spray insecticidal soap, neem oil extract, pyrethrins, imidacloprid, cyfluthrin, deltamethrin, or lambda cyhalothrin on indoor plants that are brought outside to combat aphids. Examples of brands and goods can be found in Table 1. Granules of imidacloprid spread over the soil will also suppress aphids. On Table 1, there is a footnote about spraying indoor plants outside. For safe use, adhere to label instructions.

Mealybugs are tiny, whitish insects related to scales. They are quite slow-moving and between 1/8 and 1/4 inch long. The eggs and the adult females are both covered in a white, waxy substance that gives them a cottony appearance. Some have filaments made of wax that protrude from their bodies.

From the eggs, nymphs (immature forms) emerge. The waxy covering starts to develop after they start eating. Nymphs resemble adults but are younger. Mealybugs’ wax coating helps them resist pesticides and makes them a little challenging to manage. Mealybugs are typically found on the axils and lower surfaces of leaves (where the leaf attaches to the stem). A particular species eats the roots. They consume plant sap, which stunts, distorts, and occasionally kills, the growth of the plant. Mealybugs emit honeydew, just like aphids do, which promotes the development of the fungus that causes sooty mold.

Control: You may get rid of small infestations of mealybugs by picking them out by hand or by giving them a quick wipe down with a cotton swab dipped in rubbing alcohol. Another option is to use an insecticidal soap spray. It could be necessary to remove the plant if there is a significant infestation. Spray pyrethrins, acetamiprid, imidacloprid, cyfluthrin, deltamethrin, or lambda cyhalothrin on indoor plants that are outdoors to get rid of mealybugs. A soil application of imidacloprid granules will also control mealybugs. Examples of brands and goods can be found in Table 1. On Table 1, there is a footnote about spraying indoor plants outside. For safe use, adhere to label instructions.

Spider mites: Although mites are not insects, spiders and mites are more closely linked. Plant damage is generally the first indication of their presence because of how tiny they are. With more severe infestations, a silky web is frequently visible.

Spider mites harm plants by sucking plant sap, and both their adult and immature versions do so. The effects of the damage include light-colored speckling on the upper surface of the leaves and a generally faded appearance of the plant. If the mites are not controlled, the plant will die and its leaves will turn bronze or yellow. Spider mites are typically a bigger issue for indoor houseplants, especially palms and English ivy.

To get rid of mites and break up their webs, firmly spray strong plants with water, including the undersides of the leaves. Insecticidal soap can also be sprayed on plants. Spray insecticidal soap, neem oil extract, or an insecticide with sulfur on indoor plants that are outside. To control mites, it is frequently required to spray once a week for a few weeks. Examples of brands and goods can be found in Table 1. On Table 1, there is a footnote about spraying indoor plants outside. For safe use, adhere to label instructions.

Plants left outside in the summer may have less spider mite infestation. Make sure to initially arrange all indoor plants in a mostly shaded area because even plants that thrive in more sunlight may burn until they become used to the higher light levels.

Adult fungus gnats are about 1/8 of an inch in length and have a delicate look. They frequently can be observed flying or dashing through the dirt under a houseplant. They have poor flying abilities and are drawn to light.

Although the adults don’t eat houseplants, they can be bothersome to people. They are frequently observed in great numbers on surrounding windows in cases of heavy infestations.

The whitish larvae (immature stages) of fungus gnats can reach a size of 1/4 inch and feature shiny black heads. The larvae typically eat rotting organic matter or soil-based fungus. Some species’ larvae will eat roots as well. Young plants are especially vulnerable due to this feeding. In older, established plants, the loss of the plant’s typical healthy appearance is the first indication of an infestation. Because larvae feed on a plant’s roots, a plant that is severely affected may lose its leaves.

When growing plants in potting soil that is rich in organic matter, such peat moss, indoors, fungus gnats are frequently an issue. Particularly when overwatering happens, it becomes a concern.

Control: For plants that can stand it (i.e., the majority of indoor plants, particularly in the winter), let the soil dry out in between waterings. The larvae will perish under dry conditions. Keep saucers under indoor plant pots dry, and invert saucers under outdoor plants to prevent moisture accumulation. Houseplants’ soil can be treated with products that include strains of the biological control agent Bacillusthuringiensis subspecies israelensis and watered into the soil to combat pests. Examples of brands and goods can be found in Table 1. For safe use, adhere to label instructions.