I three small hollyhock plants in spring and planted them relatively close to a side wall of our house with lots of sun and consistent watering. The plants have gotten huge; lots of big leaves… but no stalks or flowers. Wondering if they are a kind that flower the following year or if something is wrong…
Hollyhocks often behave as biennials. That means in year one, they only grow leaves. Next year they will bloom and get even larger and then die. They produce copious amounts of seed and will start the cycle over with seed that is dropped or that you collect.
You can give them fertilizers high in potassium and phosphorus to promote blooming. This article will help: https://www.gardeningknowhow.com/ornamental/flowers/hollyhock/tips-on-hollyhocks-growing-hollyhocks-successfully.htm