When rootingcuttings from lavender stems that are more mature, such as from hardwood cuttings, that's better done later in the season. This allows new plants to overwinter as roots... Boost stocks of lavender for free, by taking cuttings in summer – simply follow this step-by-step guide from the experts at BBC Gardeners' World Magazine. Do I need rooting hormone to propagate lavender? No, rooting hormone isn’t necessary, but it can improve success rates, especially with hardwood cuttings. Discover Pinterest’s best ideas and inspiration for How to rootlavendercuttings. Get inspired and try out new things. How do you take cuttings from lavender? Step 1: Select what kind of cutting you want. Softwood cuttingsroot faster, but they aren’t as reliable and don’t do well propagating in water. Check out the following steps to learn how to propagate lavender. Before You Begin. Lavender is one of the easiest plants to propagate from cuttings, which root easily in nutrient-rich soil. Here’s everything you need to know about choosing the type of stem cutting and how to root it. 7 Steps to Propagate Lavender from Cuttings. Skip to section…How to Grow Lavender From CuttingsCan I RootLavenderCuttings in Water?Can I RootLavenderCuttings in Water? Pot up lavendercuttings once they have developed a strong root system.The advantage of propagating lavender in water is that the cuttings will start rooting quicker than in soil. Do you put lavendercuttings in water or soil? While lavender can be propagated using water, it is very susceptible to root rot.How long does it take for lavendercuttings to root? You’ll have the most success rootinglavendercuttings when the plant isn’t in bloom since it’s putting its energy towards making more flowers during that time. Lavendercuttings can be moved into individual pots or planted straight into the garden as soon as the roots are an inch or two long. In the potting medium, this will take a couple of weeks. Lavenderroots best from semi-hardwood cuttings, which must be gathered in mid- to late summer after the season's current growth has begun to mature. Softwood cuttings are taken in spring from the soft tips of new growth. These will root quickly, usually within 2 to 4 weeks, but they aren’t as reliable as cuttings taken from hardwood.