Grosso is a fragrant lavender with dark purple lavender flowers on long stems. It blooms in mid-July and splays out, as if the flowers are too heavy for it to hold up. It has a wonderful fragrance and has a high oil content. It is great in sachets, potpourri or dried flowers.
The plant grows to about 3 1/2 feet around and at least as tall when flowering but is more compact when not blooming and measures about 2 1/2 feet around.