Growing Exotic Herbs in Maharashtra: What Surprised Us Most in Year One

When we decided to add exotic herbs to our crop plan at Grovera Farms, we thought we had a reasonable idea of what to expect. We had been farming in Raver, Maharashtra since 1983. We had years of experience with cherry tomatoes, lettuce, and exotic vegetables inside our NVPH polyhouses. How different could herbs be?

As it turned out, quite different. And in ways we did not anticipate.

This is the honest account of our first year growing exotic herbs in Maharashtra — basil, oregano, rosemary, thyme, sage, parsley, and lemongrass. What thrived, what struggled, what taught us something new, and what we would do differently if we started again tomorrow.

Why We Decided to Grow Exotic Herbs

The decision did not come out of nowhere. Over the past few years, we noticed a steady increase in demand from our B2B supply partners — hotels, restaurants, cloud kitchens, and retail chains — asking if we could supply fresh culinary herbs alongside our existing produce line.

Most of these buyers were importing dried herbs or sourcing inconsistent quality from distant suppliers. They wanted local, fresh, and reliable. That aligned perfectly with what we do at Grovera. So in early 2025, we allocated dedicated beds inside our polyhouses and began trials with seven herb varieties.

The Herbs That Surprised Us by Thriving

Basil — The Unexpected Star

We expected basil to do reasonably well, but we did not expect it to become the strongest performer in our herb programme. Growing basil in India, particularly in the warm, controlled environment of a polyhouse in Maharashtra, turned out to be almost ideal. The warmth that other herbs sometimes struggled with was exactly what basil wanted.

Sweet basil grew vigorously, producing dense, aromatic leaves with a turnaround cycle that was noticeably faster than we had planned for. We were harvesting marketable leaves within five to six weeks of transplanting, and the plants kept producing through multiple cuttings.

Lemongrass — Zero Fuss, Maximum Return

Lemongrass felt almost too easy. It adapted to the Maharashtra climate as though it had always belonged here. It needed minimal attention compared to the Mediterranean herbs, tolerated temperature swings without complaint, and grew with the kind of vigour that made us wonder why we had not started sooner.

The demand for fresh lemongrass from our hotel and restaurant clients was also stronger than expected, particularly for Southeast Asian and fusion menus.

Parsley — Quietly Consistent

Flat-leaf parsley settled into a reliable rhythm. It did not grow as fast as basil, but it was steady and predictable. Once we dialled in the right watering frequency and gave it partial shade during peak afternoon hours, parsley became one of the most dependable crops in the herb section.

The Herbs That Needed More Care Than We Expected

Rosemary — The Diva of the Polyhouse

Rosemary was our biggest learning curve. It is a Mediterranean herb that prefers dry air, well-drained sandy soil, and moderate temperatures. Maharashtra's humidity, even inside a polyhouse, was a challenge we underestimated.

Our first batch suffered from root rot within weeks. The growing medium retained too much moisture, and the ambient humidity inside the polyhouse during monsoon months created conditions rosemary simply does not tolerate well. We lost nearly 40 percent of that first planting.

Rosemary taught us that growing exotic herbs in a polyhouse is not just about temperature control. Humidity management is equally critical, and sometimes the two work against each other.

What eventually worked was raising the beds for better drainage, switching to a coarser growing medium with more perlite, increasing airflow around the rosemary section, and being far more conservative with irrigation. By the second cycle, survival rates improved significantly.

Thyme — Slow, Particular, and Worth the Patience

Thyme grew slowly. Much more slowly than we expected based on our reading and initial projections. It wanted drier conditions, less feeding, and more light than some of our other herbs. In a polyhouse where we were optimising for a mix of crops, giving thyme its preferred conditions meant rethinking bed placement.

We eventually moved thyme to the edges of the polyhouse where air circulation was better and humidity was slightly lower. That made a noticeable difference. The flavour intensity also improved once we reduced watering frequency.

Sage — The Most Temperamental

Sage was the herb that tested our patience the most. It did not like the heat during April and May, it was prone to fungal issues during the humid months, and it grew at a pace that made commercial viability a genuine question mark in year one.

We have not given up on sage, but we have accepted that it will always require more attention per square foot than any other herb in our programme. For now, we grow it in limited quantities for specific clients who value it.

Temperature Challenges in Maharashtra

Raver sits in the Jalgaon district of Maharashtra, where summer temperatures regularly cross 42 degrees Celsius. Even inside our NVPH polyhouses, managing heat during peak summer was one of the biggest challenges of the herb programme.

Most culinary herbs prefer a range between 18 and 30 degrees. When the polyhouse interior climbed above 35 degrees despite cooling systems, we noticed visible stress in rosemary, thyme, and sage. Basil and lemongrass handled it far better.

Our key adjustments included:

• Running fan-and-pad cooling systems during peak hours from March through June
• Adding shade nets over the most heat-sensitive herb beds
• Scheduling irrigation for early morning to keep root zones cooler
• Staggering planting cycles so that the most sensitive herbs matured before the worst of the heat

Humidity Management Inside the Polyhouse

This was, without question, the factor we underestimated the most. Herb farming in a polyhouse in Maharashtra means dealing with humidity levels that can swing from 40 percent in dry winter weeks to above 90 percent during monsoon.

Mediterranean herbs — rosemary, thyme, sage, and oregano — evolved in climates with dry summers. They are simply not built for sustained high humidity. We saw fungal issues, powdery mildew on sage leaves, and root problems in rosemary that were all directly tied to humidity.

What helped was improving ventilation, using dehumidifiers selectively during critical periods, spacing plants more generously than we initially planned, and being rigorous about removing any decaying foliage before it became a fungal source.

Pest Control for Herbs — A Different Approach

Growing herbs for culinary use means pest control has to be thought about differently than for other crops. These are leaves that go directly onto plates and into food. Chemical residue is not an option.

We relied heavily on integrated pest management. The most common issues we encountered were aphids on basil, whiteflies on parsley, and spider mites on thyme during dry spells. Our approach included:

• Sticky traps placed strategically throughout the herb beds
• Neem-based sprays applied during non-harvest windows
• Encouraging beneficial insects by maintaining biodiversity around the polyhouse
• Regular scouting — checking plants two to three times per week rather than waiting for visible damage
• Maintaining proper spacing to allow air circulation, which reduces the damp conditions pests favour

The good news is that most herb varieties, when healthy and growing in the right conditions, are naturally more resistant to severe pest pressure than many vegetable crops.

Harvest Timing — Nothing Like Traditional Crops

One of the biggest mindset shifts for our team was understanding that herb harvest timing works differently from the vegetable crops we were accustomed to. With cherry tomatoes or lettuce, there is a clear maturity window. With herbs, the harvest is ongoing and the timing directly affects flavour, aroma, and shelf life.

Basil, for example, should ideally be harvested just before flowering for the best flavour. If you wait too long, the leaves turn bitter. Rosemary, on the other hand, can be harvested more flexibly, but younger growth tips have better aroma than older, woody stems.

We had to train our team to harvest with their noses as much as their eyes. The difference between a good herb harvest and a great one often comes down to timing it within a day or two of the optimal window.

What We Learned About Ourselves

Beyond the agronomy, this first year of growing exotic herbs taught us something about who we are as a farm. We have been farming since 1983, and it would have been easy to stay within what we knew. But stepping into herbs — with all the surprises, setbacks, and small victories — reminded us that farming is never a finished skill. There is always more to learn.

The herbs that struggled taught us more than the ones that thrived. Rosemary's refusal to cooperate forced us to rethink everything we assumed about humidity and drainage. That knowledge now benefits every crop in our polyhouse.

Looking Ahead: Year Two and Beyond

Going into year two, we are expanding basil and lemongrass production to meet growing demand from our B2B partners. We are refining our approach to rosemary and thyme with dedicated low-humidity zones. And we are exploring new varieties — Thai basil, purple basil, and micro-herbs — based on what our restaurant clients are asking for.

If you are a hotel, restaurant, cloud kitchen, or retail buyer looking for a reliable herbs supplier in India, we would genuinely enjoy the conversation. Explore our full produce range or get in touch directly.

And if you are a fellow farmer considering herbs in your polyhouse, our honest advice is this: start with basil and lemongrass. Build your confidence. Then work your way toward the Mediterranean herbs with patience, good drainage, and a healthy respect for humidity.