How To Care For Lavender Bushes. Lavender stems may be kept in a vase filled with fresh water. This means that they need at least 6 hours of sunlight each day.
This is why dry and sandy substrates that dont retain water are recommended. In winter keep the containers fairly dry maybe in a cold greenhouse or in the rain shadow at the base of a wall to keep off excessive rain which will help improve the plants tolerance to cold weather. Lavender stems may be kept in a vase filled with fresh water.
Remove lavenders from rich gardens soils and transplant them to either a pot or amend the garden soil with sand or gravel and plant somewhere else in the planting boarder.
French lavender grows well in chalky soil but wont be happy in acidic soil. If your soil is clay mix sand into it to make it lighter. Plant Lavender plants in full sun which means at the very least 6 hours or more as that is what this plant needs to thrive. To lock water in lavender stems grow watertight bark without any openings to the outside air.