![]() ![]() The flowering period of hollyhocks lasts from July to September. The stem and lobed leaves of hollyhocks, about 15 cm in size, are light green in colour and rough-haired. In the first year, only the rosette of leaves is formed, from which in the second year grows a sturdy, barely branched stem with numerous flower spikes. If they are reseeded annually, you can look at their beautiful flowers year after year. Hollyhocks are usually biennial, but in favorable locations may well be perennial. Hollyhocks can grow up to 3 m tall and are popular for planting in the back of herbaceous borders or even along house walls, which makes them stand out particularly well. Their distinctive feature is their height. For a long time they have also felt at home in Europe. The ancient garden mallows originally come from the Orient. ![]() Hollyhocks ( Alcea) are flowering shrubs and form a distinct genus in the mallow family (Malvaceae). Hollyhocks: flowering period, origin and characteristics Hollyhocks: flowering period, origin and characteristics.Several varieties offer good genetic resistance. Slugs, snails, and Japanese beetles like the leaves of hollyhocks, but the most widespread problem is a fungal disease called rust, evidenced by orange-brown deposits on leaf undersides. Allow a few spikes to stay on the plants until they shed mature seeds. Cutting old blossoms will stimulate modest reblooming. Gather stems for use in cut arrangements as you need them, when at least half of the flowers on a stem are open. They are the best hollyhocks for containers. Comparatively compact French hollyhocks are easy to grow as reseeding annuals. When well pleased with their site, hollyhocks reseed for many years, with new seedlings appearing in fall and spring. Single-flowered varieties are more weather resilient that doubles because single blossoms shed rain. Hollyhocks grow to 6 feet (1.8 m) tall, so plan to stake them if you live in a windy area. Our Garden Planner can produce a personalized calendar of when to sow, plant and harvest for your area. A surface mulch suppresses weeds while making the plants look more attractive. Young plants need water when they are actively growing. Plants started in early spring may bloom their first year. The natural life cycle of hollyhock is to sprout in late summer, grow into a winter-hardy green rosette, and bloom the following summer. ![]() Depending on climate and hollyhock variety, plants may be annual, biennial or perennial. Young hollyhocks can be transplanted, but they often grow best from seed. The easiest way to get a start with this reseeding biennial is to sow seeds where you want the plants to grow in early spring or late summer. Rows: 11" (30cm) with 11" (30cm) row gap (minimum) Sow and Plant Single Plants: 11" (30cm) each way (minimum) Regular feeding will extend the bloom time of hollyhocks. Drench plants with a liquid fertilizer when they begin to grow tall, and again three weeks later. Mulch over the plants’ root zones with rich compost just as new growth emerges in spring. New seedlings that come up in spring easily survive late freezes. Yes, hollyhocks are hardy biennials or short-lived perennials. Alcea rosea, Alcea ficifolia Crop Rotation Groupįertile, well-drained soil enriched with compost. ![]()
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