A classic cottage garden staple, hollyhocks (Alcea rosea) bloom mid-summer with numerous flowers on tall spikes. Many of the most common varieties are. Growing hollyhocks (Alcea rosea) in the garden is a goal of many gardeners who remember these impressive flowers from their youth. Hollyhocks are annual, biennial, or perennial plants usually taking an erect, unbranched form. The herbage usually has a coating of star-shaped hairs. What is the difference between marshmallow and hollyhock? I found the pink flowering plant (photo attached), which I think may be a marshmallow. Hollyhock, herbaceous plant of the mallow family (Malvaceae), native to China but widely cultivated for its handsome flowers. The several varieties include. Hollyhock, also known as the Althea rosea, is a herbaceous plant of the hibiscus family. The flower is native to China but has been widely. If you want to grow hollyhocks in your garden and reduce the risk of rust, use these tips. Rust (a fungal disease) can be a big problem with. When you think of a British cottage garden, you think of hollyhocks. Their tall, towering stems can line a path, stand either side of a gate. Hollyhocks are easy to grow and their blooms come in a wide range of jewel colours, flowering from early summer to autumn. Their tall spires look good grown. hollyhock definition: 1. a garden plant that has very tall stems covered with brightly coloured flowers 2. a garden plant. Learn more.