Minimum order quantity for this plant in 14cm pots is 3 units Lavender Grosso has violet flowers with a strong scent mid spring to summer. Is very high in oils and has a large showy inflorescence. The intense colouring make a mass planting of 'Grosso' a must. Grows to 1m by 1mt. Highly recommended by Online Plants. Prune after flowering, and use mulch to keep barely moist. Lavender Grosso is a popular variety of lavender known for its tall, sturdy stems and long-lasting blooms. Here are some tips on how to grow Lavender Grosso: Soil: Lavender plants prefer well-draining soil with a pH between 6.5 and 7.5. If your soil is heavy and doesn't drain well, amend it with sand or perlite. Location: Lavender plants need full sun to thrive, so choose a location that receives at least 6 hours of direct sunlight per day. Watering: Lavender plants are drought-tolerant and prefer to be on the dry side. Water deeply once a week or when the soil is dry to the touch. Fertilizing: Lavender plants do not require a lot of fertilizer, but a light application of a balanced fertilizer in the spring can help promote healthy growth. Pruning: Prune the lavender plant in the spring after new growth appears. Cut back the stems by about one-third to promote bushier growth and more flowers. Lavender Grosso is often grown commercially for its essential oil, but it also makes a beautiful addition to any garden with its long-lasting, fragrant blooms. Will benefit from feeding twice per year with a complete plant food and liquid fertilizer. Available for fast delivery to your door in all Melbourne, Sydney, Adelaide, Canberra and Brisbane, metropolitan and regional areas.