N
InsightHorizon Digest

What is eating my hollyhock leaves

Author

Isabella Browning

Updated on April 20, 2026

The hollyhock weevil eats small irregular holes in the leaves, while Japanese beetles can riddle the leaves with holes eventually skeletonizing them. … Caterpillars and sawflies can also eat irregular shaped holes in the leaves. Look for them at dusk on the underside of leaves and along the stems and remove any you find.

How do I protect my hollyhocks from bugs?

Spray insecticidal soap directly on these pests; it will kill them on contact. If caught early in the season, you may be able to prevent them from laying eggs by checking nightly and destroying the pests you find, until no more hollyhock weevils are detected.

What does a hollyhock weevil look like?

The hollyhock weevil, Rhopalapion longirostre, is a tiny, black beetle with tannish to orange legs and mouthparts located at the tip of a long beak or snout. Including the snout, females are about 1/4 inch long and males about 1/8 inch. Female hollyhock weevils have snouts almost as long as the rest of the body!

What is attacking my hollyhocks?

Rust, Puccinia malvacearum. This is the most common and destructive disease on hollyhocks.

How do you stop slugs eating hollyhocks?

  1. Keep slugs away by planting varieties they don’t like eating.
  2. Plant sacrificial plants to tempt slugs away from your favourite flowers.
  3. Physically remove slugs from your garden.
  4. Place beer traps around vulnerable plants.
  5. Surround plants with coffee grounds, copper and gravel mulches.

Will slugs eat hollyhocks?

The most effective thing to do is replace slug-prone plants, such as clematis, delphiniums, doronicums, hollyhocks, hostas, hyacinths, ligularia, lilies, lupins, pansies, primulas and tulips with slug-resistant plants including acanthus, achillea, alchemilla, agapanthus, astilbe, astrantia, crocosmia, digitalis, …

How do you keep hollyhocks healthy?

Hollyhocks need full sun and moist, rich, well drained soil. The mistake many novice hollyhock growers make is to plant this flower in soil that’s too dry. If you are planting seeds, sow them outside about a week before last frost. If you are planting seedlings out, wait about two to three weeks after last frost.

How do you get rid of weevils?

  1. Discard any infested foods. …
  2. Vacuum pantry shelves, cracks, and crevices.
  3. Wipe shelves with white vinegar.
  4. Dispose of garbage and vacuum bags outside, away from the home.
  5. Check regularly for reappearance — it may take awhile to get rid of them completely.

What animal eats hollyhocks?

If the plants are being chewed off whole or in large pieces, the possible suspects would include groundhogs or woodchucks. These animals are unpredictable and potentially quite dangerous and are best removed by an animal control specialist.

What is making holes in my hollyhock leaves?

What is hollyhock rust? Hollyhock rust is a fungal disease of the aerial parts of the plant, caused by Puccinia malvacearum. It is spread by airborne spores. The disease will invariably develop on untreated hollyhocks, although it is worse during wet summer weather.

Article first time published on

Why do my hollyhock leaves look like lace?

The leaves of my hollyhocks look like lace. What is causing this and how can I prevent it? Hungry caterpillars, sawflies and Japanese beetles can cause the damage you describe. … If you can’t tolerate the problem or the Japanese beetles are decimating the plants, you can use an insecticide.

What is a natural slug repellent?

There are a handful of plants which are believed to be a natural repellent for slugs. What you need: Slug repelling plants “ Living Green suggest that wormwood, rue, fennel, anise, and rosemary are the best slug repelling plants.

What is the best slug repellent?

A new short video by family-run business envii suggests the most effective slug deterrent is diatomaceous earth (DE), rather than more traditional deterrents such as copper rings or crushed eggs.

What can I use to stop slugs eating my plants?

1) Crushed eggshells/gravel/woodchip or mulch Molluscs don’t like travelling over rough ground, so if they sense sharp edges, you can use this texture to deter them. 2) Coffee grounds. Slugs don’t like the bitter taste of coffee grounds. Sprinkle coffee grounds on the soil around your plants to deter them.

What do you spray hollyhocks with?

Spray with pyrethrin, carbaryl or acephate only as a last resort, as these broad spectrum insecticides can also kill any beneficial insects residing in the garden. To be most effective, spraying should be done in the late evening.

What kind of fertilizer do hollyhocks like?

Fertilize the hollyhock plant two times per year, once in the early spring as it begins the growing cycle, and again in the fall to sustain it through the winter. Use a balanced fertilizer, such as 10-10-10 or 15-15-15.

What is the best fertilizer for hollyhocks?

Hollyhock flowers do well with 10-10-10 fertilizer, which, in short, stands for equal levels nitrogen, phosphorus, and potassium. You should only need two to three tablespoons of this fertilizer per plant per season. Another option is a water-soluble fertilizer designed for flowering plants.

What do slugs hate?

There are certain plants that slugs hate like the strong smell of mint, chives, garlic, geraniums, foxgloves and fennel. Plant them around the edge of your garden to keep them out. … Put Copper of foil barriers around plants that the slugs are eating. When the slugs cross them they are given a small shock.

What plants do slugs hate?

  • Ferns. Low maintenance, incredibly hardy and well down the slug and snail menu; ferns make an attractive, hassle-free addition to the garden. …
  • Hydrangeas. …
  • Euphorbias. …
  • Lavender. …
  • Rosemary. …
  • Geraniums. …
  • Japanese Anemone.

Do you cut hollyhocks down in winter?

End of season care Hollyhocks are full hardy and don’t require any special treatment over winter. Remove all dead leaves and discard plants that have been badly effected by rust disease (see problems below).

Do rabbits and deer eat hollyhocks?

Hollyhock is a short-lived perennial (technically it’s a biennial) so add new plants every year to insure a constant flow of flowers. The plants may seed themselves and will take two summers to mature enough to flower. Hollyhock is relatively deer resistant.

Will rabbits eat my hollyhocks?

Replace rabbit-eaten annual flowers with rabbit-resistant plants such as ageratum, campanula, geraniums, impatiens, forget-me-nots, scabiosa or spider plant. Install perennials such as columbine, daylily, hollyhock, iris, garden mums, phlox, speedwell or yarrow where rabbits are a constant problem.

Do bay leaves repel weevils?

Bay Leaves: Bay leaves are great for using inside cupboards or pantry space. They help to combat unwanted weevils, ants, cockroaches, moths and flies. … It may be used to keep rats, fleas, ants, and mice away.

How do you keep weevils away?

  1. Get To Know Weevils. …
  2. Keep Your Kitchen & Pantry Clean. …
  3. Seal Any Possible Weevil Entry Points In Your House, Especially The Pantry. …
  4. Check The Foods You Buy. …
  5. Store Foods In Airtight Containers. …
  6. Throw Away Infested & Open Food Packages. …
  7. Use Repellents. …
  8. Throw Out Trash Immediately.

How do I get rid of weevils in my garden naturally?

One of the easiest and most effective ways to prevent weevils and other pests in your garden is to add Diatomaceous Earth to the soil around your plants. Diatomaceous Earth is made of diatoms, which are fossilized algae that have been broken down into small white shards that humans shouldn’t inhale.

How do you get rid of hollyhock worms?

On plants that are already infested, prune out damaged foliage and stems, which not only improves your hollyhock’s appearance, but may remove new eggs and larvae as well. Handpick and destroy visible worms, webs and pupas to prevent the larvae from reaching the adult stage.

What kind of bugs get on hollyhocks?

Hollyhock weevils (Apion longirostre) are common pests in hollyhock plantings. These tiny beetles are between 1/8 and 1/4 inch in length, with hairy, gray bodies, orangish legs and a snout specifically adapted for chewing. They gnaw holes through the leaves and into the emerging flower buds.

Can you use neem oil on hollyhocks?

Neem oil can be sprayed on the hollyhocks, but start with testing a small section on a leaf. Neem oil is made from an ornamental Asian and Indian tree Azadirachta indica; therefore, it is advertised as safe for use on plants in the garden.

Do Hollyhocks attract aphids?

In some years they can show up in late April but they be around in May for sure. Even before the flower buds emerge, they begin to congregate on the undersides of the leaves. And as the buds are formed, they migrate toward these delicacies. Aphids are social and occur in groups.

How do I stop slugs eating my hostas?

  1. Clean up the area around the plants of any debris.
  2. Hand pick the slugs off the plants at night.
  3. Use traps or chemicals to kill the rest of the slugs.

What can I use instead of beer for slugs?

Yeast mixed with water can be used as an alternative to beer. Finally, replace the lid to keep out rain. Slugs will crawl in and drown (happily we assume).