Buzz
Hollyhocks are generally considered biennial plants. They grow leaves in the first year, bloom, produce seeds, and die in the second year. However, depending on the growing conditions and the plant's resilience, they may live longer than two years. In some climates, hollyhocks may have a shorter lifespan. If grown indoors or in regions with extended growing seasons, you might see blooms in the first year.
Steps
Purchase hollyhock seeds in your preferred variety and color. Hollyhocks bloom in various shades, including white, yellow, pink, deep red, and crimson, with stems reaching heights of 1.8-2.7 meters.
- Hollyhocks will self-seed for the next growing season. You can also collect seeds from the plants in the fall.
Increase the chances of blooming in the first year. Start hollyhock seeds indoors during the fall. Allow the seeds to germinate in October or November and let the plants grow through the winter. This will encourage blooming when spring arrives.
Sow seeds in a tray filled with sandy soil. Hollyhock seeds are typically large, have a high germination rate, and come in small quantities per packet, so it's best to plant each seed individually. Space the seeds 0.5-1cm apart in the soil.
- Place the tray near a window where it can receive ample sunlight.
- Water the soil as needed to maintain moisture. Hollyhock seeds usually germinate within 1 to 2 weeks.
Transplant young hollyhocks into 10cm to 15cm diameter pots if you sowed the seeds in the fall. Position the pots in a sunny spot and allow the hollyhocks to grow indoors throughout the fall and winter.
Plant hollyhocks outdoors in spring after the frost has passed and the soil temperature is at least 10°C. Alternatively, you can sow hollyhock seeds directly into the soil at this time if you didn't start them indoors.
Choose a suitable location. While hollyhocks can thrive in various climates and environments, they grow best when provided with optimal conditions.
- Select a spot with full sunlight. Hollyhocks can tolerate partial shade but require at least 6 hours of sun daily; otherwise, the flowers may be smaller and less vibrant.
- Find a sheltered area. Since hollyhocks grow quite tall, they are more vulnerable to wind and rain. Planting them near a wall, in a corner of a fence, or alongside other tall flowers can provide the best protection.
Apply organic fertilizer if necessary. Hollyhocks thrive best in moist soil.
Space hollyhock plants 30cm to 60cm apart.
Mulch around the plants with 5cm to 8cm of organic material. Mulching helps retain soil moisture, suppress weeds, and create an environment for seeds to settle into the soil in autumn and germinate in spring.
Water hollyhocks regularly. Water daily during the growth phase and then twice a week throughout the growing season if rainfall is insufficient.
Stake the flowers or tie them with braided string if the top of the plant is heavy or the stems are unstable. Avoid tying too tightly to allow for air circulation.
Continue watering the plants after they bloom. The seed pods on the stems still need nourishment to develop seeds for the next flowering season.
Harvest hollyhock seeds when they turn brown and are completely dry. Pick the seed pods and separate the seeds from the thin, dry outer shell. Alternatively, leave the pods on the plant to dry and open naturally, allowing the seeds to fall and propagate.
Plant or store hollyhock seeds. You have three options:
- Sow the seeds in the same location if your hollyhocks thrived there, or let the seeds drop naturally. Self-sown seeds will overwinter and sprout in spring.
- Start seeds immediately in a seedling tray for indoor planting if you want to begin a new hollyhock season, ensuring blooms by spring.
- Alternatively, store the seeds in the refrigerator for outdoor planting the following year.
Cut the stems close to the ground and cover with organic mulch for winter protection. Some gardeners prefer leaving a short stem stub and covering the base with coal ash. The ash absorbs moisture from the stem and deters slugs and snails.
Warning
- Hollyhocks are prone to fungal diseases like powdery mildew and rust. Water at the base and avoid wetting the leaves. Apply sulfur or copper sprays as recommended by the manufacturer if you notice discoloration or deformation on leaves or buds.
