|Lavender Size||Lavender Hedge Spacing|
|Large lavender varieties, width at full size: 30-36 inches (75 to 90 cm) e.g ‘Vera’, ‘Grosso’||Plant each lavender 2-3 feet apart|
|Medium lavender varieties, width at full size up to 24 inches (65 cm) e.g. ‘Munstead’, ‘Hidcote’, ‘Royal Splendour’||18 inches -2 feet apart|
|Smaller lavender varieties width at full size up to 20 inches (50 cm) e.g. ‘Hidcote Superior’||15-18 inches apart|
Spacing Lavender Hedges
Lavender cultivars can come in a variety of sizes with English lavender (Lavandula angustifolia) ‘Vera’ potentially reaching a colossal width of 36 inches at maturity and dwarf varieties such as Lavandula angustifolia ‘Hidcote Superior’ reaching a width of around 16-20 inches during the summer.
It is tempting to place the lavenders too close together, especially the smaller varieties, when you are first planning your planting plans. They may appear too small to make a hedge when purchased from the nursery or store.
However like so many other projects in garden there needs to be a bit of patience and deferred gratification as spacing the lavenders appropriate to their size will ensure that the hedge will form a consistent display without any gaps after around two years.
Lavenders can only grow to their full potential if they are properly cared for.
Lavenders without enough sun or lavenders in unsuitable soil may not grow sufficiently to form a continuous hedge due to stunted growth. For all details about soil mix, watering and other best practices, see my guide. how to care for lavender ‘Hidcote‘.
My personal recommendations for lavender hedges are (Lavandula angustifolia) ‘Munstead‘ and (Lavandula angustifolia) ‘Hidcote’ for smaller decorative hedges and for larger hedges the cultivars (Lavandula x intermedia) ‘Grosso‘ and (Lavandula angustifolia) ‘Vera’ are all great options.
All these lavenders can withstand cold and have a sweet, lingering aroma.
However French or Spanish Lavenders can also make great hedges, but they do require mild Winters and they do not tolerate frost and freezing temperature. Read my article to learn more about the best lavender plants for hedges.
Before you purchase or plant lavenders, make sure you know which type it is. I recommend asking at a garden center or looking on Google for the full size of your plant at full maturity. This will allow you to determine the spacing that each plant needs, based on its mature size (after 2 years).
There are hundreds of lavender varieties that can be grown and sold, but I recommend choosing an English species. They are hardy and will not get frost damaged. This could prove to be costly if the Spanish and French lavenders are planted as hedges in the wrong climate.
Top Tip: When planning your lavender hedge, consider the size and purpose of the hedge. Larger varieties can be used to form wind breaks and protect delicate plants. However, smaller plants can create a beautiful border that is stunning when they are in bloom.
To calculate the spacing of a lavender hedge, you will need to determine the maturity of your lavender varieties and then plant each one at a slightly smaller than half of its full width.
So for example, if you are planting a hedge with lavender Hidcote (a great choice) which grows up to 2 feet wide at full size (in the right conditions) then you will need to plant each lavender between 18 inches and 2 feet apart to form a hedge without any gaps.
Planting lavenders too close together will be to the detriment of each plant in terms of flowering and aroma as each plant requires the appropriate amount of space for their root systems to establish and to be in full sun.
Lavenders placed too close together can be at risk for disease because each plant prefers airflow and breezy conditions to grow.
- For a 6 ft (182 cm) hedge requires 3-4 larger lavender plants such as ‘Vera’ or ‘Grosso’.
- For a 6 ft (182 cm) hedge requires 4-5 medium lavenders plants such as ‘Munstead’ and ‘Royal Splendour’.
- For a 6 ft (182 cm) hedge requires 5-6 small lavender plants such as ‘Hidcote Superior’
It is important to note that these spacing guides assume that the lavenders are in full sunlight and that they are properly cared for so that they grow to their maximum size.
Why Lavender hedges require up to 3 feet of Space
Planting lavenders two or three feet apart may seem excessive at first but there are several reasons why you should plant at this distance if you want you lavender hedge to thrive:
- Planting each lavenders the appropriate distance apart according to its full size at maturity ensures that the lavenders root system has enough space to establish properly in the soil. Lavenders require space, but they also need water and nutrients. For larger varieties of lavender, the minimum distance required is 2 feet. This ensures that each plant gets all the nutrients and water it needs to thrive.
- Lavenders originate from the coastal Mediterranean region of Europe where they enjoy a consistent sea breeze. Lavender hedges are great windbreaks for protecting delicate plants, such as those in vegetable gardens. The risk of fungal disease is also reduced by airflow through the leaves. Lavenders do not grow well in humid climates or in areas that are without airflow or breezes, which is why planting the appropriate distance is important. The lavender can still be arranged as a continuous hedge, but not too close together. This will reduce airflow and increase the risk of fungal diseases.
- Lavenders of all varieties prefer full sun. The lavenders that receive the most sun will produce more flowers and have stronger aromas. The spacing of larger lavender plants 2 feet apart ensures that they get all the sun it needs without shading each other.
- Planting lavenders the appropriate distance apart will ensure that the plants will form a continuous hedge after 2 years without any obvious gaps. If the plants are placed further apart, the lavender hedge will look less dense.