How to grow Clematis 'John Warren'
Try to plant in a location that enjoys full sun and remember to water often. Keep in mind when planting that John Warren is thought of as hardy, so this plant will survive close to or on freezing temperatures.
Growing John Warren from seed
Look to ensure a distance 1.48 feet (45.7 cm) between John Warren seeds when sowing to make sure your seedlings have enough space.
Transplanting John Warren
Ensure that temperatures are mild and all chance of frost has passed before planting out, as John Warren is a hardy plant.
Harvesting John Warren