Mature lavender is fairly drought-resistant, but while lavender is within its first year of growth, it needs regular watering. Normal weather conditions often suffice, but if you live in an area that is particularly dry or if you have not received much rain, you should regularly soak the soil. Allow the soil to dry out in between watering, though.
 Herbicides, pesticides, and even fertilizers can kill the beneficial organisms that live in the garden soil and help your lavender to thrive. Skip the fertilizer altogether once planted in the ground. If a pesticide is needed, try an organic pesticide solution that contains no chemicals, since this is less likely to have a negative effect.
 Lavender grows slowly during the first year, and most of the plant's energy goes toward root development and vegetative growth. You should encourage this process by cutting off any flowering stems once the first buds begin to open during the first growing season.


After the first year, cut flowering stems after 1/3 of the buds have opened to encourage further growth. Leave behind at least 1/3 of the new growth.
 Keep the soil warm by applying gravel or bark mulch around the base of the plant, leaving 6 inches (15 1/4 cm) of free space around the stem for air circulation.
Water the lavender only when dry.
Avoid chemicals.
Prune the lavender.
Mulch during cold weather.
{"src": "wikihow-all_validation", "title": "How to Grow Lavender from Seed3"}