What is Eating My Hollyhocks?
What is making holes in my hollyhock leaves?
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. Leaves, stems and calyces (outer parts of the flower) can all be attacked.
What can I spray on hollyhocks?
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 is eating my hollyhock leaves UK?
The hollyhock weevil eats small irregular holes in the leaves while Japanese beetles can riddle the leaves with holes eventually skeletonizing them. Knock these pests into a bucket of soapy water to reduce their population and feeding damage. Caterpillars and sawflies can also eat irregular shaped holes in the leaves.
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?
Hollyhocks are susceptible to attack by three different insects; hollyhock weevils, Japanese beetles and sawflies. The gray-colored weevil looks similar to an overgrown tick with a long snout, reports North Carolina State Extension. The mouth on the snout bores through the flower buds so the female can lay eggs.
How do you keep hollyhocks healthy?
Watering: Provide regular water and keep soil moist for starting hollyhocks. However, once well established, they are fairly drought tolerant. Water from below and avoid wetting the foliage, as this can lead to diseased leaves.
Why are my hollyhock leaves Lacy?
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.
Do rabbits eat hollyhock leaves?
1. 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 Japanese beetles eat hollyhocks?
Japanese beetles (JBs) have few natural enemies in North America, but they can feed on over 300 plants, including large landscape trees like lindens and crabapples. Among garden plants, JBs are partial to beans, corn, grapes, hollyhocks and others such as hibiscus, roses and zinnias.
What does rust look like on hollyhocks?
What does hollyhock rust look like? Initial symptoms of hollyhock rust are orange to yellow spots (roughly ⅛ to ¼ inches in diameter) on lower leaves. Irregular brown areas may also develop on stems.
When should hollyhocks be pruned?
End of season care
No pruning is required, just remove any leaves that are heavily infected with rust disease through the summer and cut down the flower spikes when the flowers have faded. Hollyhocks are easy to grow from seed and will readily self-seed in your garden.
What do you do with rust on hollyhocks?
Cut down hollyhock plants at the end of the season and burn or bury the debris. Use fungicides if necessary. Chlorothalonil and sulfur are good choices. Apply them every seven to ten days or more often if it rains.
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.
Why are my hollyhock buds turning brown?
As with all flowering plants that produce seeds after pollination, hollyhocks will develop seed pods that expand as the seeds mature and ripen. Once the seeds are mature enough to harvest, the pod will turn brown because it dries out.
How often do you water hollyhocks?
Water daily for the first few weeks after planting, and regularly after that, keeping the soil is moist but not waterlogged. Once hollyhocks grow to maturity, they become relatively drought-tolerant, so you can then decrease your watering frequency to two to three times per week for the rest of the growing season.
What fertilizer is best for hollyhocks?
Water and fertilize hollyhocks throughout the growing season for the best appearance and bloom. Scratch a balanced granular fertilizer into the soil around plants when new foliage is 2 inches high, then switch to a high-phosphorus, water-soluble formula such as 10-30-20 in June.
What fertilizer do hollyhocks like?
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 caterpillar eats hollyhock leaves?
The painted lady caterpillar (Vanessa cardui) feeds on hollyhock foliage under a web, which it sometimes uses to bind two or more leaves together so it can live inside, protected from predators. While feeding damage by moth or butterfly larvae can be unsightly, control of most of these pests isn't usually necessary.
Do earwigs eat hollyhocks?
However, earwigs also unfortunately eat ornamental and vegetable plants, particularly dahlias, zinnias, butterfly bush, hollyhocks, lettuce, strawberries, potatoes, roses, and seedling beans and beets, as well as the silk of sweet corn.
Why do my leaves look like lace?
Skeletonized plant leaves are but a shadow of themselves, with window panes of damage throughout the leaf. The reasons for skeletonizing leaves may stem from insect or disease and occasionally chemical injury. Most common are insect pests whose feeding behavior is along the veins of the foliage.
Do deer or rabbits eat hollyhocks?
Hollyhock is relatively deer resistant.
How do you control Japanese beetles?
A multi-part attack is best. Start by spraying the affected plants with Japanese Beetle Killer (pyrethrin) or neem at the first sign of attack. Pyrethrin-based insecticide is a safe and effective way to control these pests on vegetables, grapes, raspberries, flowers, roses, trees and shrubs.