Product description
Rosemary 'Primley Blue' is a popular perennial herb, famously prized for its low, spreading growth habit and its masses of bright blue flowers. The primary part used for its culinary value is its aromatic, needle-like leaves, which provide a classic, robust, and piney rosemary flavour essential for seasoning roasted foods and breads. However, its edibility doesn't stop there; the attractive, bright blue flowers are also edible and make a beautiful, fragrant garnish for salads and drinks.
When it comes to planting and maintenance, this is an easy-to-grow, spreading evergreen shrub, but it has very specific needs. It is extremely fussy about its light conditions and must have a location in full, direct sun to flower profusely. The main requirement for it to grow well is providing it with soil that is exceptionally well-drained, as it strongly dislikes "wet feet" and is very drought-tolerant once established. As an added benefit to the garden, its prolific blue flowers are known to be a major favourite of bees.
Please Note: When purchasing plants please consider that each live item is unique and may therefore differ from the images shown, which are for illustration purposes only - The plant will be supplied in a growers pot.
Garden Plant Size Guide

Plants in larger pots can be multiple years older than their smaller counterparts with more mature root systems and foliage. This makes them able to thrive as a full size plant in your garden quicker than smaller alternatives.
The most common size of pot that garden plants come in are 9cm/1L/3L/5L this is in reference to the diameter at the top of the pot.
9cm potted plants still remain the most popular cost effective option though, they just may take a little patience to allow them to grow into full maturity once planted in your garden.
Plant specs, care guide & tips
Key features
When to plant
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
Planting and period of interest times are general guidelines and may vary based on your location and conditions. For best results, consult local gardening resources.
Instructions
Top Tip
The straight, sturdy stems of Rosemary 'Primley Blue' are perfect for stripping of leaves and sharpening to use as aromatic skewers for barbecuing meat or vegetables. Soaking these woody stems in water for an hour before grilling prevents them from burning and infuses the food from the inside out.
How to Water
Water Rosemary 'Primley Blue' deeply but effortlessly, allowing the ground to dry out significantly before watering again. Established plants rarely need supplemental water unless there is a severe, prolonged drought.
How to Plant
Choose a location in full sun with gritty, well-drained soil for Rosemary 'Primley Blue' to encourage the best display of blue flowers. Avoid heavy clay soils.












