• Lavandula x intermedia, also called Lavandin, is a hybrid cross between Lavandula angustifolia and Lavandula latifolia. Cultivars are slightly less hardy than L. angustifolia and are taller with mounds of gray foliage and long loose spikes. They tolerate hot (dry) weather better than English Lavenders. Cultivars are commercially grown for their high yield of oil which, however, is inferior in quality to L. angustifolia's oil. This Lavender type is great for hedges, and rock gardens, as an accent plant, and is also popular in potpourris or as a culinary herb. Flowering typically occurs from mid to late summer (generally 1 month later than English Lavender).

• Lavandula stoechas also called French Lavender, Spanish Lavender or Butterfly Lavender is recognizable by the conspicuous sterile bracts resembling extravagant ears, on top of the short dense inflorescence. Grown for its silvery aromatic leaves, it is used extensively for essential oils or potpourris. The very distinctive flowers, however, steal the show with their distinctive "ears" sprouting from each flower head. This Lavender loves hot weather but is more tender (Hardiness 8-9) than other Lavenders. A beautiful selection for mass plantings or containers. Flowering typically occurs from mid-spring to late summer.

• Lavandula dentata also called Fringed Lavender or French Lavender is an evergreen shrub native to Eastern and Southern Spain. It derives its name from the toothed (dentate) leaves which have a richly aromatic lavender-rosemary scent. Not as fragrant as other lavenders but the spikes are very colorful and the foliage is particularly attractive. This Lavender is hardy to zones 8-9 and generally grows up to 3 ft. (90 cm). Nonstop flowering typically from early summer to fall and nearly all year if given enough light and warmth.

Elements to consider when selecting a Lavender variety

• Hardiness & Humidity
  Most Lavenders are hardy to zones 5-9 but some varieties are tender and will grow only in warmer areas (zones 8-9). With adequate protection, Lavender can even be grown with success in zones 3-4. Lavenders love hot weather, but they do not like humidity and might be affected by fungal disease and rot.
• Height
  Lavenders range in height from very compact plants that do not grow more than 12 in. (30 cm) to varieties that easily reach 3 ft. high. The dwarf varieties are ideal for containers while the taller ones are great candidates for hedges.
• Foliage
  The Lavender foliage, which is evergreen in warm areas, will be on display for a longer period than the blossoms, therefore it shouldn't be overlooked in your selection decision. Very attractive, it ranges from various shades of green to gray-green or silver. Leaves may be narrow (Lavender angustifolia) or toothed (Lavender dentata).
• Flower
  Lavender flowers vary in size, shape, and color. If you want to use the flower spikes for drying, the calyx color (bud) is important, not the corolla (petals) as they turn brown and fall off. The darker the calyx, the most stunning the dried flower. In the garden, the color selection will be a matter of taste. Many people do not realize that Lavender comes in colors other than purple. There are many blue, pink, or white varieties. Surprise yourself or the onlookers with them! Lavandula stoechas is another great variety that will steal the show with its petals sprouting from each flower head and looking like butterfly wings.
• Blooming Season
  Lavenders are summer-blooming perennials with blooming seasons varying between varieties and cultivars. Generally speaking, Lavender angustifolia blooms about 1 month earlier than Lavandula x intermedia. Some experience a second flush of blooms in the fall. Others, like Lavandula stoechas, may be in bloom all year round under favorable conditions.