Microgreens for Delhi's Pollution Season — What to Grow and Eat from October to February

✍️ Sonia Pardasani, Founder BageechaBox | 🕐 6 min read | 🌫️ Health Guide

Quick answer: No food can cancel out Delhi's smog, but some microgreens give your body real support during it. Broccoli microgreens are the best-researched — they contain sulforaphane, which in a clinical trial helped people in a polluted region excrete more airborne pollutants. Add radish, mustard and sunflower microgreens for vitamin C and vitamin E, and grow them indoors with windows closed on the worst AQI days.

For more than twenty years, my daily commute took me past AIIMS Delhi. The long queues of patients and families outside made me ask a simple question: what can an ordinary person do, at home, for everyday health? That question is how BageechaBox began. And every October, when the sky over Delhi turns grey, I get asked a version of it again — is there anything we can eat that helps?

Here is my honest answer, with the research, the varieties to grow, and how to keep your trays healthy when the air outside is not.

Why Nutrition Matters More in Smog Season

Fine particles (PM2.5) trigger oxidative stress and inflammation in the body. Your body fights this with its own antioxidant and detoxification systems — and those systems depend partly on what you eat. Microgreens are young seedlings harvested at 7–14 days, when many vitamins and plant compounds are highly concentrated, which makes them an easy daily way to top up that support.

To be clear: microgreens are not a mask, an air purifier, or a medicine. They are one sensible part of a pollution-season routine, alongside limiting outdoor exposure and following your doctor's advice.

The 5 Microgreens to Grow This Season

Microgreen	Key Compound	Why It Helps
Broccoli	Sulforaphane	Activates the body's own detox enzymes
Radish (Mooli)	Vitamin C	Antioxidant, supports immunity
Mustard (Sarson)	Glucosinolates, Vitamin C	Same Brassica family benefits as broccoli, grows fast
Sunflower	Vitamin E	Protects cell membranes from oxidative damage
Peas (Matar)	Beta-carotene	Supports healthy airway linings

What the Research Says About Broccoli

Broccoli is the one microgreen with direct human research on air pollution. In a randomised clinical trial in Qidong, China — a region with high air pollution — published in Cancer Prevention Research (2014), adults who drank a daily beverage made from broccoli sprouts excreted significantly more benzene and acrolein, two common airborne pollutants, than the placebo group. The effect was seen from the first day and held through the 12-week trial.

Broccoli microgreens come from the same seed and carry the same sulforaphane-forming compounds. That is why broccoli is the first tray I recommend to every Delhi family from October onwards. For the full story on this variety, read our broccoli microgreens guide.

Growing Indoors When the AQI Is Severe

October to February is actually Delhi's best growing season — cool temperatures and low humidity mean fewer fungus problems than monsoon. The challenge is the air, not the weather.

Step 1 — Move trays inside

Keep trays away from open balconies and windows on high-AQI days. Soot settling on leaves is not something you want to eat.

Step 2 — Add light if the sun disappears

Smog and fog can cut daylight badly for days at a time. Weak light gives you pale, leggy microgreens. A full-spectrum LED grow light for 12–14 hours a day keeps growth sturdy and green.

Step 3 — Keep a little airflow

Closed rooms trap moisture. A small fan on low near your trays, or running an air purifier in the same room, keeps air moving and reduces the risk of fungus.

Step 4 — Water less than in summer

Cooler rooms dry out slower. Bottom water only when the cocopeat feels light, and rinse your harvest gently before eating.

How to Eat Them Every Day

• Eat them raw — sulforaphane forms when the leaves are chewed or chopped, and heat reduces it. Add microgreens at the end, after cooking.
• Morning smoothie — a handful of broccoli or pea microgreens blends in almost invisibly.
• On dal, sabzi and parathas — scatter radish or mustard microgreens just before serving.
• Kids' tiffin — sunflower microgreens in a sandwich or roll add crunch children actually enjoy.

A small handful (20–30g) a day is plenty. Consistency matters more than quantity. More ideas in our Indian recipes guide.

⚠️ The nutritional information in this article is based on published research and food-based observations. Microgreens support a healthy diet; they do not treat or prevent disease. Please consult a doctor for medical advice, especially if you have asthma, a thyroid condition, or another pre-existing health condition.

Frequently Asked Questions

Q: Do microgreens protect you from air pollution?

They don't protect you from breathing it in. What some of them — especially broccoli — can do is support your body's own detoxification and antioxidant defences. Use them alongside masks, purifiers and limiting outdoor time.

Q: Which microgreen is best for Delhi's pollution season?

Broccoli, because of its sulforaphane content and the human research behind it. Radish and mustard are good companions because they grow fast and are rich in vitamin C.

Q: Can I grow microgreens on my balcony during smog?

On high-AQI days, it's better to grow indoors. Particles settle on the leaves. Keep trays inside, use a grow light if daylight is weak, and rinse the harvest before eating.

Q: Should I cook broccoli microgreens?

No — eat them raw. Heat reduces the enzyme that forms sulforaphane. Add them on top of food after cooking, or blend them into a smoothie.