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Sowing hollyhocks: how to succeed in late summer and fall! Incl. useful care tips

Large filigree flowers in bright colors: The hollyhocks are a real eye-catcher in any garden. However, to ensure that the beautiful mallows please the eye next year, they should be sown in the bed now. We explain how to sow hollyhocks and what to bear in mind.

Sowing hollyhocks: Harvesting the seeds in mid-August

Hollyhocks seed harvesting and propagation and sowing

Admittedly: Flowering hollyhocks are true eye-catchers. With good care, the flowering period extends from mid-summer into the fall. At the beginning of August, fruiting begins. Mid-August is the right time to harvest and sow the seeds of the flowering mallows.

Wait until the fruit capsules open – this is a sure sign that you can harvest the seeds. Collect them and scatter them on newspaper. Let the seeds dry overnight and then store them in an airtight container, in a cool and dark place.

Requirements for location and soil

Hollyhocks sowing and care harvesting seeds (1)

Before sowing hollyhocks, find a suitable location in the garden. These perennial bloomers prefer a place in full sun. However, they need wind protection, otherwise their stems may break. It is advantageous if the flower bed is also protected from rain.

As for the requirements to soil: a humus-rich soil turns out to be optimal. Good drainage is an absolute must, so that waterlogging does not form and the roots do not rot. Otherwise, the mallows are very easy to care for and undemanding.

Sowing hollyhocks: the most important things at a glance

Hollyhock seeds propagate useful tips when sowing

A few days before sowing, you can slightly loosen the soil in the flower bed. This is necessary because the young plants initially form very fine roots. If the soil is too loamy, the mallows will not be able to root through and will die.

Hollyhocks are very sensitive as young plants and cannot tolerate root competition well. Therefore, you should first kill weeds in the bed and only then sow the seeds.

If necessary, you can work in coarse-grained sand to help water drain away. If necessary, you can additionally fertilize the bed with compost or humus.

The hollyhocks are dark seedlings. So dig several small holes about ten millimeters deep at a distance of 50 cm. First fill some potting soil into each hole and then place the seeds.

You can put the seeds in the hole three at a time. It is unlikely that all three seeds in one hole will germinate and sprout. However, if you see the seedlings growing too close together next year, you can dig up the offending and weak specimens and transplant them.

Then water the seeds vigorously and cover them with soil. Now is the right time to make a sketch with all the plants in the flower bed and mark the mallows on it.

Proper care after sowing

Hollyhocks sowing useful tips for autumn and summer


Seeds get through the winter well without special care, and then germinate in the spring. In the first year, the young plants form their roots and leaves. They do not flower until the second year. In this country, hollyhocks are grown as biennial flowers . However, they can also delight the eye of the amateur gardener with their blooms for much longer. The main thing is to cut back the flowers close to the ground after the first flowering.

However, if you grow hollyhocks as perennial flowers, you should regularly check them for diseases and pests. Often the young plants are attacked by fungi. However, you can avoid this if you transplant the mallows in the spring, immediately after budding. The minimum distance between each plant is 50 cm. You should also make sure that the flower bed is not planted too densely.

pink hollyhocks planting in the garden tips

Always water the hollyhocks from the bottom. The leaves and the flowers should remain dry. Wet leaves provide the best conditions for fungi to multiply.

Prune in late summer and fall on a warm, sunny day. Open intersections are entry paws for germs, which spread quickly when it rains

What can you do if the young plants are affected by a disease? React as quickly as possible, cut off the diseased parts of the plant and dispose of them with household waste. You can also seek advice at the garden center. If all the seedlings die, then next year you should sow the mallow seeds in another bed. Especially fungi remain in the soil for a long time and can attack the new seedlings.

Sowing hollyhock hybrid: is it possible?

In garden centers you can find hollyhocks that are resistant to most fungal diseases. However, these are hybrid plants that cannot be sown.

In contrast, “true” hollyhocks can self-seed. Cut off all but 2 – 3 fruit capsules before the seeds are ready to harvest indoors. Leave the remaining three on the plant. In mid-August to mid-September, they will open and release the seeds.

Sowing hollyhocks what to consider


The hollyhocks are beautiful flowers with imposing large flowers that provide food for pollinating insects. At the end of summer you can harvest the seeds from the fruit capsules and plant them in the flower bed. Choosing the right location is crucial for success. Mallows prefer a sunny spot in the garden. Because they grow very tall – up to 2 meters in some cases – the stems can break in strong winds. Wind protection is therefore crucial. Otherwise, the flowers are easy to care for.