Clematis 'Dark Secret'

Try to plant in a location that enjoys full sun and remember to water often. Keep in mind when planting that Dark Secret is thought of as hardy, so it can be safe to leave outdoors for the majority of winter (although if in doubt, using a row cover is often a good idea).

Look to ensure a distance 1.48 feet (45.7 cm) between Dark Secret seeds when sowing to make sure your seedlings have enough space.

Ensure that temperatures are mild and all chance of frost has passed before planting out, as Dark Secret is a hardy plant.