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Where should I plant clematis?
Light: Clematis blooms best in full sun. Some varieties, such as 'Nelly Moser', can bloom in part shade, but the amount of flowering will be reduced. Clematis will benefit from afternoon shade in hot summer areas. Soil: Clematis prefers a moist, well-drained soil with a neutral to slightly alkaline pH.
Does clematis need to be planted in the ground?
All clematis prefer to be planted so the crown of the plant - this is where its stem(s) emerge from the compost in which it was grown - is at least 3-4 inches (6 cm) below soil level. I plant well-grown clematis with a strong stem deeper still at about 6" and it has always served me well.