Pollination Info for Grosso Lavender (Lavandula x intermedia 'Grosso')

Grosso lavender is a hybrid variety of lavender that is sterile and cannot produce viable seeds. Therefore, it relies on pollination by bees and other insects to produce new plants through vegetative propagation.

The flowers of Grosso lavender are composed of a tubular-shaped calyx that surrounds the corolla. The calyx has five lobes, with the uppermost lobe forming a distinctive "helmet" shape. The corolla is tubular and has two lips, with the upper lip formed by two fused petals and the lower lip formed by three fused petals.

When a bee or other insect lands on the flower, the weight of the insect causes the keel of the corolla to bend downwards, exposing the reproductive structures of the flower. The bee then collects the nectar and pollen from the anthers, which are located at the top of the flower's reproductive column.

The pollen grains of Grosso lavender are sticky and adhere to the body of the bee, which then transfers the pollen to other flowers as it visits them. This process of cross-pollination ensures genetic diversity and promotes plant health and vigor.

Grosso Lavender (Lavandula x intermedia 'Grosso') FAQs

Q: What is Grosso Lavender?

A: Grosso Lavender is a hybrid variety of lavender, scientifically known as Lavandula x intermedia 'Grosso'. It is a cross between Lavandula angustifolia and Lavandula latifolia.

Q: What does Grosso Lavender look like?

A: Grosso Lavender has tall, upright stems that can reach up to 3 feet in height. The plant has grey-green foliage and produces long, slender spikes of fragrant dark purple flowers.

Q: Where can Grosso Lavender grow?

A: Grosso Lavender can be grown in most temperate regions, but it prefers a Mediterranean climate. It thrives in well-draining, alkaline soil and needs plenty of sunlight.

Q: How do I plant Grosso Lavender?

A: Grosso Lavender can be planted in the spring or fall. Dig a hole slightly larger than the root ball of the plant and set it in the hole, making sure the top of the root ball is level with the ground. Water the plant thoroughly and keep the soil moist for the first few weeks after planting.

Q: How do I care for Grosso Lavender?

A: Grosso Lavender is a low maintenance plant. It needs little watering after it is established and should be fertilized once a year in the spring. Prune back the plant after flowering to promote bushier growth.

Q: What are the uses of Grosso Lavender?

A: Grosso Lavender is primarily grown for its fragrant flowers, which are often used in sachets, potpourris, and aromatherapy products. The plant can also be used as a culinary herb and is often added to desserts, teas, and syrups.

Q: Are there any pests or diseases that affect Grosso Lavender?

A: Grosso Lavender is generally a hardy plant, but it can be susceptible to fungal diseases if the soil is too moist. Aphids and spider mites can also infest the plant, but these can usually be controlled with insecticidal soap or by attracting beneficial insects like ladybugs.

Planting Instructions for Grosso Lavender

• Choose a location with well-draining soil and full sun exposure
• Prepare the soil by adding compost or other organic matter and loosening any compacted soil
• Plant in the spring or fall, spacing plants 2-3 feet apart
• Water thoroughly after planting and keep the soil moist but not waterlogged until established

Care Instructions for Grosso Lavender

• Water deeply and infrequently, allowing the soil to dry out slightly between waterings
• Fertilize in the spring with a balanced fertilizer or organic compost
• Prune after flowering to promote new growth and maintain shape
• Protect from harsh winter conditions by covering with a layer of mulch
• Monitor for pests and diseases, and treat as necessary