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Salvia 'Black Knight'

8 reviews

12 items left

This is how we pack and send your Herb Plants to all states except TAS & WA

You will receive
- 1 Salvia Black Knight Herb Plant in a 50 X 75mm tube - General growing instructions

All of our Herb Plants are grown organically with certified organic potting mixes and fertilizers

Botanical Name:

Salvia Black Knight is a large salvia, growing to 2 meters high and 1 meter wide. The flowers begin as almost black and fade to deep purple as they age. The flowering period lasts from early summer to autumn. The mid green leaves are aromatic.

Growing Conditions

Black Knight prefers to grow in a warm sunny aspect and can take being dry between watering periods. Alternatively it can tolerate being constantly moist. Most soil types are tolerated well, so it is quite versatile. However, this salvia may be prone to frost damage and it can be useful to prune the stems in winter and protect the roots with pea straw. Black Knight is known to be deciduous in colder areas of the world, but the plant will return in spring. Since it is a large growing salvia it is often best suited to the back border or as a fence screen.

The salvia family has over 900 members with an extensive history as culinary, medicinal and ornamental plants. Ornamental salvias have become collectorsí items, as gardeners try to find a place in their garden for each and every one. There are salvias that will suit every type of soil and climate. More information on the Salvia genus and Common Sage (Salvia officinalis) may be found on our Common Sage page.

All information provided on this website is for informational purposes only. Please seek professional advice before commencing any treatment.


Our shipping costs are a flat rate, meaning you can add any amount of products to your order and you will pay the same.

Regular Post - $10.95
Express Post - $12.95 (If your order contains a plant express is required)


We send (Australia wide, excluding Western Australia and Tasmania):

Monday and Tuesday (for all zones)


We send (Australia wide):

Monday to Friday

*Subjected to actual conditions. Find out more about our Delivery information.


If you are not 100% satisfied with your purchase, you can either return your order for a full refund or exchange it for online store credit.

Find out more about our Returns information.

Customer Reviews
5.0 Based on 8 Reviews
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Filter Reviews:
    Australia Australia
    Very healthy

    Lovely robust plant. speedy delivery and amazing packaging.

    Andi W.
    Wonderful quality

    The plants themselves were in excellent condition and I thought the packaging and information that came with them was terrific too. Would definitely recommend.

    Irene N.
    Plants are great!

    The salvias and rosemary arrived in good condition and are growing strongly despite the heat. Planting video was helpful. Have purchased from Herb Cottage before and will continue to do so. Thank you.


    arrived in perfect condition

    Kay P.
    Recent purchase

    I could not be happier with the plants I bought through Her Cottage . Also the extra advice from Bart about what are good plants for where I live. The plants more than tripled in within 2 weeks of planting them out. I will definitely be buying from you again, and would recommend your business to anyone!