A perennial in zones 5-9, this evergreen has silvery leaves grace tightly branched plants, topped with traditional blue spikes and make compact Provence Blue is unique and loves hot weather and is easy to grow. Growth Habit At maturity, this plant reaches 24-32" both tall and wide blooming from late spring to late summer. Intensely fragrant flowers. Care Site in a sunny spot with good drainage and average to poor soils. Like most English lavenders, it will bloom again if sheared in early summer, and not allowed to grow woody. Paying attention to spacing will give your plants the ventilation they need to remain free of fungal disease, particularly in wet or humid climates. Toxicity Lavender contains a small amount of linalool, which is toxic to dogs and cats. Mild exposure to lavender is not generally harmful and may help with anxiety, depression, and stress. Lavender poisoning is possible and may cause vomiting, reduced appetite, and other symptoms.This plant is deer resistant.