Basket grass (Oplismenus sp.) is a delicate, ornamental grass grown for its graceful, arching foliage However, these attractive plants are frequently plagued by crusader bugs (Murgantia histrionica) – sap-sucking insects that pierce leaves and stems to feed. Left uncontrolled, these pests can quickly damage and devastate basket grass. Fortunately, there are several effective organic methods to get rid of crusader bugs without harming your plants or the environment
Identifying Crusader Bugs
- Shield-shaped bugs, about 1⁄4 inch long
- Distinctive black and reddish markings
- Often clustered on undersides of leaves
- Cause wilting, yellowing, leaf drop
- Sap-sucking insects that pierce plant tissues
- Can rapidly reproduce to infest plants
Checking basket grass regularly is key to catching infestations early before they get out of hand. Inspect the undersides of leaves and along stems for clusters of small, shield-shaped bugs Their black bodies have distinctive red stripes and spots. Damaged leaves may be stippled yellow or dried out and brown along the edges Plants become progressively more stunted as crusader bug populations expand.
Organic Crusader Bug Controls
Insecticidal Soap
Spraying insecticidal soap directly on bugs and infested areas of basket grass is very effective. The soap disrupts cell membranes and kills bugs on contact without harming plants. Cover undersides of leaves thoroughly and repeat applications as needed.
Neem Oil
Mix neem oil with water according to label directions. The oil’s azadirachtin disrupts crusader bug growth and reproduction. Both adults and nymphs are controlled. Spray basket grass, especially leaf undersides, until lightly coated with oil.
Diatomaceous Earth
Spread food-grade diatomaceous earth on the soil around infested basket grass. The sharp silica in the powder cuts through insect bodies, causing dehydration and death. Reapply after rain or watering. Avoid breathing in the dust when applying.
Vacuuming
For light infestations, use a small hand-held vacuum to suck up bugs clustering on plant leaves and stems. Capture them in a sealed bag and dispose in the trash. Check plants daily and vacuum up any remaining bugs.
Yellow Sticky Traps
Hang yellow sticky traps near infested basket grass to capture adult crusader bugs flying around seeking new feeding sites. For best results, use traps early in the season before populations explode. Combine with hand removal of bugs from plants.
Natural Predators
Encourage beneficial insects like ladybugs, lacewings and pirate bugs which prey on crusader bugs. Avoid using broad-spectrum insecticides that kill these helpful natural enemies. Plant nectar-producing flowers to nourish predators.
Remove Sheltering Weeds
Eliminate weeds around basket grass plantings to deprive crusader bugs of alternate food sources and hiding spots. Pull weeds or apply organic herbicide. Keep the area around plants clean.
Preventing Reinfestations
- Check new plants thoroughly for hitchhiking pests before bringing home
- Remove and destroy heavily infested plants
- Apply row covers over plants to exclude flying adults
- Use reflective mulch to deter landing and egg-laying
- Rotate control methods to prevent resistance
After eliminating a crusader bug infestation, take steps to prevent future problems. Inspect new additions carefully and quarantine if necessary. Remove and discard any plants that cannot be salvaged to prevent bugs from migrating. Install lightweight row covers over plants to form a barrier against reinfestation. Pests are less likely to infest healthy, vigorous plants so maintaining optimal growing conditions is key. Never allow crusader bugs get a foothold in your basket grass again!
With vigilance and integrated organic control methods, basket grass plants can thrive pest-free. Handpick clusters, apply insecticidal soap weekly, and hang sticky traps to capture stray adults. Spread diatomaceous earth around plant bases to kill nymphs emerging from soil. Enlist ladybugs from the garden center if needed to supplement natural predators. Nip any infestations in the bud before they spiral out of control. Your beautiful basket grass will thank you!
Integrated Pest Management: The Big Picture
Integrated Pest Management (IPM) is about using all the tools in your shed. It combines biological warfare (go, team predator!), cultural strategies, and, if necessary, chemical interventions. The goal is to manage pests in an environmentally sensitive and cost-effective manner. Remember, its a marathon, not a sprint.
Fungus Gnats: More Than Just Annoying
Fungus gnats might seem like nothing more than a nuisance, but their larvae can harm your plants roots. They have a short life cycle, which means they can pop up like unwanted guests at a party. Keep the soil dry and youll keep these party crashers at bay.
How to Get Rid of Grasshoppers in Your Lawn (4 Easy Steps)
FAQ
What kills stink bugs instantly on plants?
What scent do stink bugs hate?
How to get rid of bordered plant bugs?
What is the best repellent for stink bugs?
How do you get rid of Crusader bugs on citrus trees?
Crusader bugs are minor pests of citrus. Check five randomly selected young shoots on each tree. Control of crusader bugs is rarely required. If more than 25% of young shoots are infested, spot spray with a selective insecticide. Many predators control crusader bugs including birds, spiders, assassin bugs and parasitic wasps.
Do Crusader bugs eat wattles?
They are minor pests of citrus. Crusader bugs feed on a wide range of plants, including wattles, eucalypts, citrus and garden plants (e.g. roses). Adults are about 20-25mm long and can spray an unpleasant odour if disturbed. There are five nymphal stages and nymphs are smaller than the adult with a red abdomen when very young (first stage).
How do I get rid of basketgrass?
Another option is to spot treat with an herbicide, making sure to spray only the weed and not desirable plants. If basketgrass is a significant weedy problem, you can apply a granular, pre-emergence herbicide that will inhibit weed seeds from sprouting.
Can glyphosate kill basketgrass?
Over time, they may out-compete the basketgrass. An herbicide, such as glyphosate, may also be used to remove basketgrass. Use caution if spraying under or near trees and other plant material as glyphosate products are not selective and will damage and/or kill desirable plants as well.