Sow cold germs quickly

Created: 01/14/2022 13:12

Bergenia flowers in spring - but only if germination occurs on the coldest days of the year.

© Andrea Warnecke/dpa-tmn

Some summer flowers actually like it frosty best: on cold winter days, their seeds receive an impulse to sprout.

Bornhöved - Some plant seeds need a cold shock to start growing.

Low temperatures practically wake them up.

Perennial gardener Svenja Schwedtke therefore advises sowing these

- not like most seeds in a warm house, but outside in the open air.

Plants with this frosty tendency are therefore also called cold germs.

At home in cold winter regions

These include many popular summer flowers - such as monkshood, phlox, torch lily, lady's mantle*, bergenia and daylily.

Columbine, wood anemone, autumn crocus, iris, lily, peony, cowslip and bleeding heart are also cold germs.

The reason for these unusual starting conditions for the plants are the

.

They come from the mountains or other regions with cold winters, their seeds must survive these weather conditions unscathed.

Cold germ sowing from autumn

Cold germs can generally be sown from October.

They come first in boxes lined with earth, in which they stay indoors for three to four weeks at 15 to 18 degrees.

Then they are kept cooler for about a week, at about 10 degrees.

On a frost-free day, the crates are then taken outside, where they experience a cold stimulus for a few more weeks.

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