Does Lavender Need Cold Stratification?

How do you do warm stratification?

To stratify seeds, start by placing them in some moistened peat, sand, or paper towels in a closed container or sealed plastic bag.

1 For cold stratification, place the container in the refrigerator.

For warm stratification, store it somewhere where the temperature remains between 68 and 85 degrees Fahrenheit..

How do I prepare lavender for winter?

Lavender Plants in the Ground Prepare plants for winter by pruning. Once harvesting has been completed for the season (ex. you have cut off all the lavender flower blooms), a light pruning to create a mound can help to minimize damage by snow. Cut the newer stems, but avoid cutting the woody part of the plants.

Can lavender be grown in pots?

Start with large pots, as lavender plants can grow to the size of small shrubs. Twelve- to 16-inch containers do the job nicely. Fill the bottom inch or two of the container with Styrofoam peanuts or gravel to facilitate swift drainage. Add a tablespoon of lime to the potting mix after filling the container.

What is cold stratification?

Cold stratification is the process of subjecting seeds to both cold and moist conditions. Seeds of many trees, shrubs and perennials require these conditions before germination will ensue.

How do you speed up cold stratification?

Freezing and thawing: Freezing and thawing of the seeds seems to speed up the stratification process compared to storing them at a constant refrigerator temperature. Light: Expose the seed to light during germination.

Can I leave lavender outside in winter?

In most situations, lavender should be grown outdoors. Even in coldest regions where lavender isn’t hardy, it’s best to keep growing lavender indoors as a fall-back position, something you do in winter when plants can’t be outdoors.

Should lavender be cut back in winter?

Unpruned lavenders tend to become woody and have decreased blooms. However, lavender should not be pruned during the winter. Unlike many perennial plants and shrubs that can be pruned now, it is best to wait to prune lavender until after bloom in spring or in early fall before any danger of frost.

Does lavender come back every year?

Lavender is a perennial sub shrub the does come back after Winter and lives for many years with the right care, growing in the appropriate climate and conditions. Spanish and French lavenders may not come back after Winter in cold climates as they not as cold hardy as English lavenders.

Are you supposed to cut back lavender?

Pruning: Prune right after the first flowering and again in late August after the last flush has faded. Cut off about 2/3 of the plant’s height or to just above the bottom two sets of leaves on each stem. Take care not to cut into the woody part of the plant which can cause damage.

What is too cold for lavender?

Cold hardy lavender does actually exist. The English varieties can withstand temperatures of -20 degrees Fahrenheit (-29 C.) while the French can only withstand temperatures of 10 degrees Fahrenheit (-12 C.) or higher. … This is the temperature range to which the plant is native and in which it will thrive.

Does lavender die in winter?

Lavender is a perennial herb that continues to grow each year. … Lavender is a woody perennial, so it does continue to grow from year to year, but the stems remain upright through the winter in preparation for new spring growth. With proper care and pruning, lavender will survive in the garden for years to come.

Should you freeze seeds before planting?

Improper freezing can kill some seeds, but other seeds may be less fussy. In fact, many wildflower, tree and shrub seeds actually require a cold period, or stratification, before they will germinate. … This period of stratification can easily be simulated in a freezer.

How do you winterize lavender?

Given the proper planting conditions, though, lavender is extremely easy to winterize. Remove your lavender’s flower stalks when the flowers begin to fade. Cut the stalks off as close to the leaves as possible. If your lavender has outgrown its spot you can reduce its size by one-third.

Can lavender survive winter in pots?

They have to be moved indoors to survive the winter in colder zones. The good news is that lavenders are fairly compact plants that grow well in containers, which makes moving them between indoors and outdoors quite easy. … Too much extra soil will just stay soggy, which these plants won’t tolerate.

How long do lavender plants last?

Lavenders are not long-lived plants. Expect tender varieties to live for about five years. If pruned correctly, hardy types can live for about 15 years (as many as 20 years, in some cases).

Is cold stratification necessary?

If you’re planting native wildflowers or varieties that require cold stratification in the fall, this step isn’t necessary. Nature will do what it does best during the winter months and cold stratify the seeds for you. There are quite a few native varieties that should be cold stratified before planted in spring.

Should you soak all seeds before planting?

An overnight soak speeds the germination of all kinds of seeds. Avoid soakings longer than 24 hours to prevent rotting the seeds. Many seeds are simple to grow. Scratch up a patch of open soil, scatter the seeds, and there you go.

How do you force seeds to germinate?

One easy way to make seeds germinate faster is to presoak them for 24 hours in a shallow container filled with hot tap water. Water will penetrate the seed coat and cause the embryos inside to plump up. Don’t soak them for longer than 24 hours because they could rot. Plant the seeds immediately in moist soil.

Do seeds need air to germinate?

Seeds need oxygen so that they can produce energy for germination and growth. The embryo gets energy by breaking down its food stores. Like all organisms, this is done through a process known as aerobic respiration. —a series of reactions where energy is released from glucose, using oxygen.

What happens if you don’t prune lavender?

An annual pruning is an important step for long-lasting lavender (Lavandula spp. and hybrids) plants. Without it they grow a large, lanky, woody base that can split open — it looks bad and shortens the plant’s lifespan.

Does Lavender need to be protected from frost?

If you live where subfreezing winter temperatures are common, it’s helpful to cover your lavender plants with evergreen boughs once you’ve had your first frost and the ground is cold. … The covering also provides protection from cold winter winds that can dry out the plants and cause die-back of stems.