Dinner Plate Dahlia 'Mystery Day'

Dahlia pinnata

How to grow Dinner Plate Dahlia 'Mystery Day'

  • Full Sun

  • Medium

In zones below 8, dig and store tubers after first hard frost.

Plant in a location that enjoys full sun and remember to water moderately. Keep in mind when planting that Mystery Day is thought of as tender, so remember to wait until your soil is warm and the night time temperature is well above freezing before moving outside.

Growing Mystery Day from seed

Do not exclude light.

Try to aim for a seed spacing of at least 11.7 inches (30.0 cm) and sow at a depth of around 0.39 inches (1.0 cm). Soil temperature should be kept higher than 20°C / 68°F to ensure good germination.

By our calculations, you should look at sowing Mystery Day about 60 days before your last frost date.

Transplanting Mystery Day

Prefers full sun.

Ensure that temperatures are mild and all chance of frost has passed before planting out, as Mystery Day is a tender plant.

By our calculations, you should look at planting out Mystery Day about 0 days after your last frost date.

Harvesting Mystery Day

Dinner Plate Dahlia Mystery Day Etymology

Named for 18th century Swedish botanist Anders Dahl.