Home Herbs Lavender Growing and Harvest Information

Lavender Growing and Harvest Information

by chuck.mcmullan
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Lavender is among the most evocative of all fragrances. A favorite bath additive of both the ancient Greeks and Romans, lavender takes its name from the Latin lavare, meaning to wash. Aromatic flowers are great for potpourri, it also has many culinary and medicinal uses.

Where to Grow Lavender

Zones 5-9. Lavender is a fast-growing plant that requires full sun. Lavender loves dry, sunny, and rocky habitats and is native to the Mediterranean. Think of Los Angeles and San Francisco as areas in the United States representative of their native climate. They can easily be grown elsewhere; England could hardly be considered dry or sunny, yet English gardeners are well known for their lavender plants. While you can grow lavender in zone 5, it is unlikely that you will ever have a lavender hedge. Lavender is a tough plant, and is extremely drought resistant, once established. It is dampness, more so than cold, that is responsible for killing most plants. Dampness comes in the form of wet roots in the winter or humidity in the summer. Give your plants plenty of room to breath in the summer if it is humid in your area, and use mulch to minimize the effect of the ground freezing and thawing repeatedly. It will need to be removed after winter is over. Planting next to a brick wall or similar will set up a suitable micro-climate for the plants, protecting them from harsh winter winds, as well as re-radiating some of the absorbed heat from the sun to help keep them warm.

Soil for Lavender

Average well-drained soil, with a pH of ideally 7.1. A high humus content and rather low fertility produces the best results, as does excellent drainage. As with many herbs, less than ideal conditions improve its fragrance. Very fertile soil will produce beautiful plants but decrease the production of the aromatic oils on which the plant’s fragrance depends.

Temperature
Germination70 - 75 F
For Growth65 - 75 F
Soil and Water
FertilizerNot necessary
pH6.0 - 8.0
WaterBelow average
Measurements
Planting Depth4 - 6"
Root Depth8 - 12"
Height18 - 36"'
Width24"
Space between plants
In beds12"
in rows12 - 18"
space between rows3 - 4'
Companions
CompanionsThyme, also helps vegetables stay healthy and produce more flavor.
IncompatiblesNone
Harvest
Harvest flowers as soon as they bloom.

Planting Lavender

When –

Seeds are typically sown indoors. Cuttings in spring, summer, or early autumn can also be used to propagate the species. Cuttings taken in the spring and fall will do the best. Cut a 2-3 inch piece from the main stem, and strip off the lower leaves. Dip the bottom into a rooting compound, and place in a sterilized potting soil with damp pearlite and sand (50/50) to start. Place in a well-protected, warm, sun-filled room, and keep moist. Once rooted, move outside a few hours at a time to gradually harden them off. Once the cuttings have reached about 9-12″, they are ready to be planted outdoors. The best time to plant is either in the spring or fall.

How –

Lavender is a perennial, growing 18-36″ tall. It is a bushy to sprawling plant with small, lance-shaped, greenish-gray leaves. Spikes of lavender blossoms can be found in the following colors: purple, pink, and white. Tender varieties are grown as annuals.

Cultivation of Lavender

Lavender field in bloom

Remove faded flowers. Trim to maintain size and shape, and to remove old dead wood in early spring before new growth starts or late fall, after flowering. DO NOT prune old wood; it will not re-grow. Taller varieties should be cut back by approximately 1/3. If your plants are affected by a particularly cold winter, wait to see how they do in the spring before attempting any rigorous pruning. If you don’t prune lavender, it will develop a woody center, and new growth will stop at the central core; it will only flower along the plant’s outer edges.

Harvesting Lavender

Harvest flowers just as they open, preserve by drying. Wrap several flower stems together with rubber bands and hang upside down; they should dry in ~2 weeks, depending on the humidity level. Harvest should generally begin 10-14 weeks after planting vegetative cuttings in the soil, or 18-23 weeks from seed.

Lavender Pests

none.

Lavender Disease

none.

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