French marigold 'Diamond Jubilee'

A full sun position will ensure your plant thrives and remember to water moderately. Keep in mind when planting that Diamond Jubilee is thought of as half hardy, so remember to protect this plant from frosts and low temperatures.

Sow the seed thinly in pots or trays on a windowsill or in a greenhouse in a good quality, finely sieved, moist compost.

Try to aim for a seed spacing of at least 1.95 inches (5.0 cm) and sow at a depth of around 0.23 inches (0.6 cm). Soil temperature should be kept higher than 15°C / 59°F to ensure good germination.

By our calculations, you should look at sowing Diamond Jubilee about 49 days before your last frost date.

Transplant seedlings spacing them 5cm apart in trays and grow on. Acclimatise the plants to outside conditions and then plant 15 – 23cm apart in a sunny place.

As Diamond Jubilee is half hardy, ensure temperatures are mild enough to plant out - wait until after your last frost date to be on the safe side.