The Greek Columnar Sweet Basil, otherwise known as the Ocimum Basilicum or Sweet Basil, Common Basil, Greek Royal, Kiss-Me-Nicholas, Lemon Basil, is a rather well known herb plant by gardening enthusiasts around the world.
Best known for its low maintenance and moderate growth, this herb will likely liven up your house (or garden) with its green colored leaves. But, only if you learn how to take proper care of it for it to thrive.
Fortunately, this is exactly what we’ll cover in this Greek Columnar Sweet Basil Care Guide. So let’s dive in.
The fundamental caring guidelines for every Greek Columnar Sweet Basil can be summed up into the following:
- Water: The Greek Columnar Sweet Basil needs water often but allow the top 3 inches to dry before resuming.
- Light: Keep your Ocimum Basilicum in an environment where it can receive partial to full sun on a daily basis.
- Soil: Make sure to keep the Greek Columnar Sweet Basil in soil with well-draining properties, so ideally, one that is made of sand and loam.
That’s it – sunlight, water and soil! The basic 3 fundamentals for all plant care, and with the Greek Columnar Sweet Basil this is no exception. With these three elements, your leafy friend will live healthy and happy.

Scientific / Botanical Aspects
In botanical terms, the Greek Columnar Sweet Basil belongs to the Lamiaceae family, the genus Ocimum and the species Basilicum, hence its scientific (or botanical) name Ocimum Basilicum (OSS-ih-mum bass-IL-ee-kum).
As with other Ocimum’s, the Greek Columnar Sweet Basil is a herbaceous plant, which means it will die back to the ground every year.
Growing Region
The Greek Columnar Sweet BasilTropical Africa and Asia.
Knowing your plant’s native region is very useful, as it can give you tips on which environment is best for your Greek Columnar Sweet Basil. If you keep it in mind, you can try to replicate these conditions at home, and you’ll likely end with a healthier plant.
With this in mind, the Ocimum Basilicum will be most used to regions where the plant hardiness level falls between 10b, 10a and the ideal climate zone is between 1, 1A, 1B, 2, 2A, 2B, 3, 3A, 3B, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, A1, A2, A3.
Growth and Size
Growth
In terms of size and growth, the Greek Columnar Sweet Basil is a relatively moderate grower, which makes things somewhat easy for any plant enthusiast.
Size
But what exactly does this mean for your Greek Columnar Sweet Basil? How large a pot should you consider, how tall, how wide can it get? Let’s jump in…
The Ocimum Basilicum can grow up to 1′ – 2′ (30cm – 60cm) in 1′ – 2′ (30cm – 60cm) and 1′ – 2′ (30cm – 60cm) in 1′ – 2′ (30cm – 60cm).
These dimensions make the Greek Columnar Sweet Basil a relatively medium herb compared to others, so it’s best to keep this fact in mind since it will affect where you want to keep yours at home.
Also, expect it to grow in a wonderful columnar shape, which is something worthwhile to remember when making your garden landscape plans.
This is why experts recommend keeping an area of approximately 18″ – 24″ (45cm – 60cm) free so the Greek Columnar Sweet Basil can spread to its best extent.
Water
In terms of watering, the Greek Columnar Sweet Basil is a fairly complicated plant to take care of.
This is mostly because it has a not so straightforward watering schedule and somewhat regular watering needs.
Specifically, most experts agree that the Ocimum Basilicum needs water often but allow the top 3 inches to dry before resuming.
Which is why it is considered a plant with relatively average needs in terms of water.

Watering
As a rule of thumb, you should remember to keep your Greek Columnar Sweet Basil in soil with well-draining characteristics, as these will guarantee the right conditions for your plant to grow and thrive.
When you consider this, this is why you should aim to choose soil that has good drainage, and moist properties to keep the right moisture levels at all times.
But, if you want a ‘one-size-fits-all’ solution to watering your Greek Columnar Sweet Basil then you should consider the famous ‘finger’ test. To perform this test, you just need to put your finger in your plant’s soil and determine if it’s moist or not. If it is, then don’t water; if it isn’t, then please do. In any case, this test will allow you to know if your Greek Columnar Sweet Basil needs or does not need water, every time.
Soil Mix
As mentioned earlier, the Greek Columnar Sweet Basil prefers to have soil with good drainage, and moist properties at all times, reason why you need to make the soil mix out of sand and loam.
In addition to this, expert gardeners recommend having preferably alkaline, acid or neutral soil.
Light and Exposure
In terms of light & exposure, the Greek Columnar Sweet Basil requires partial to full sun in order for it to thrive under the right conditions.
Most experts agree that this herb will do well as long as you keep it in full sun, and it will be able to grow properly.
Specifically, we recommend that you place your Ocimum Basilicum in little to partial shade (only 2-6 hours of direct sunlight a day), to full and direct sun (more 6 hours of direct sunlight per day).
Season
Being a herbaceous plant, the Greek Columnar Sweet Basil will die back to the ground every year.
But, you can expect it to have its ‘prime-time’ during the spring (late), the summer (early, mid, late), and during the fall.
Flowers
You can expect your Greek Columnar Sweet Basil to flower around the summer months from July to September (summer).
In particular, this herb is well known for its showy flowers around the plant enthusiast community.
The Greek Columnar Sweet Basil produces some beautiful white, or purple/lavender, pink and white flowers around this time of year.
Foliage
The leaves from the Greek Columnar Sweet Basil have a beautiful green color during most of the year.
In particular, they have a simple arrangement with a opposite organization in its leaves.
You can expect the leaves from your Ocimum Basilicum to be around (1-3 inches) in size.

Attracts, Tolerance and Resistance
The Greek Columnar Sweet Basil is well known for its tolerance to animals like rabbit and deer, so don’t worry if any of these come along, your Ocimum Basilicum will be fine.
Garden
Does your Greek Columnar Sweet Basil have any garden recommendations? Does it serve any gardening purposes? Here’s how you can get the most out of your new plant.
Most Ocimum Basilicum owners agree that this herb will look great in most cottage gardens of all types.
Other owners consider that they complement well most gardens of informal and cottage styles.
In particular, the Greek Columnar Sweet Basil’s best location within your garden is in beds and borders, and in patio and containers, others use it for landscaping in a border, or a houseplant.
Conclusion
Even though we covered a lot of care information for your Greek Columnar Sweet Basil, remember the basics: sunlight, soil and water, as these should be enough to grow a healthy plant at home.