Growing Basil, Thyme, Rosemary and Oregano from Seed at Home

Basil, thyme, rosemary and oregano cover most of what an Indian home cook reaches for in Italian and Mediterranean recipes, and all four can be started from seed with basic equipment. This sub-blog is part of our Exotic Herb Seeds Growing Guide and walks through each one individually, since their sowing needs aren't identical.

Basil

Basil is the fastest and most forgiving of the four. Sow seeds about 6mm deep in a light seed-starting mix, keep the soil consistently moist, and expect germination in 5-10 days given warm conditions. Basil loves heat and sun, making it well suited to most Indian climates outside of peak winter in the north.

Thyme

Thyme seeds are tiny and should barely be covered - press them lightly into the soil surface rather than burying them. Germination is slower and less even than basil, often taking 2-3 weeks, so patience matters more than technique here. Once established, thyme is drought-tolerant and prefers drier soil between waterings.

Rosemary

Rosemary is the trickiest of the four to start from seed - germination rates are naturally low and can take 3-4 weeks. Many growers find better success starting with a small nursery cutting instead, but seed-grown rosemary is possible with warm, consistent conditions and a well-draining mix.

Oregano

Oregano sits between basil and thyme in terms of ease - light surface sowing similar to thyme, but germination that's usually a bit quicker and more reliable, typically 1-2 weeks. It spreads readily once established, so give it room in a wider pot or grow bag.

General Care Once Seedlings Emerge

•         Thin seedlings once they have their first true leaves, keeping the strongest one per cell 
•      Move to a bigger container once roots fill the starting tray
•      Water when the top inch of soil is dry rather than on a fixed schedule
•      Avoid heavy fertiliser - a light feed is enough for most Mediterranean herbs

Once your seedlings are ready to move into their final home, our guide on setting up containers and grow bags for herbs covers exactly what soil mix and pot size each of these herbs prefers.

FAQs

Q1. Which is easier to grow from seed - basil or rosemary?

Basil, by a wide margin. It germinates faster and more reliably than rosemary, which has naturally low germination rates and can take 3-4 weeks to sprout.

Q2. How deep should I sow thyme and oregano seeds?

Both should be sown very shallow - press the seeds lightly into the soil surface rather than burying them, since they need light to germinate well.

Q3. Why hasn't my rosemary seed germinated yet?

Rosemary is naturally slow and inconsistent from seed, often taking 3-4 weeks. If it still hasn't sprouted after a month, consider starting a fresh batch or using a nursery cutting instead.

Q4. Do basil, thyme, rosemary and oregano need full sun?

Yes, all four do best with at least 5-6 hours of direct or bright indirect sunlight a day, though basil in particular tolerates more heat than the others.