Indoor Microgreens for Beginners: A Small-Apartment Guide
July 30, 2026
Microgreens are a practical first edible crop for a small apartment because they grow in a shallow tray and are harvested young. Start with one fast, beginner-friendly type such as radish, kale, or arugula. Use clean food-grade containers or trays, a lightweight soilless growing mix, drinking water, and the brightest indoor spot you have. A plant-growing light can supplement window light when needed.
Quick growing conditions
| Condition | Beginner target |
|---|---|
| USDA zone | Not a limiting factor for an indoor tray; grow them indoors any time of year |
| Growing space | Windowsill, counter, shelf, or other clean indoor surface |
| Plant type | Vegetable microgreens such as radish, kale, arugula, mustard, or cabbage-family mixes |
| Season | Year-round indoors |
| Sunlight | Brightest available window light; supplement with a plant-growing light if natural light is limited |
| Container size | A shallow food-grade container or tray; use a drainage tray inside a catch tray when possible |
| Planting window | Start a tray whenever you can give it regular attention and clean conditions |
What you need
- Seeds intended for growing microgreens or edible vegetable seeds from a reliable supplier
- A clean, shallow food-grade container or microgreen tray
- A lightweight soilless potting mix or another clean growing medium made for microgreens
- Drinking water, a spray bottle, and a small watering container
- Clean scissors or a knife for harvest
- A tray or saucer to catch drainage water
Choose one easy crop for the first tray
Use one kind of seed per tray for your first attempt. Different crops germinate and grow at different speeds, so a single-crop tray is easier to observe and harvest. Radish, kale, arugula, mustard, and other cabbage-family crops are common beginner options. Read the seed supplier’s directions for soaking and seeding density instead of guessing; some larger seeds may have different preparation needs.
How to grow microgreens indoors
- Clean the tray and work surface. Wash reusable containers before planting. Start with a clean surface, clean tools, and drinking water.
- Prepare the growing medium. Add a shallow, even layer of moistened soilless mix. Do not use soil dug from a yard; it is too dense for this indoor tray crop.
- Sow evenly. Spread seed across the surface according to the supplier’s guidance. Dense sowing is normal for microgreens, but piling seed in clumps makes moisture and airflow harder to manage.
- Keep the surface moist, not saturated. Mist gently during the first days if needed. Once the roots are established, water carefully so excess water can drain instead of leaving the mix constantly wet.
- Give the tray light and airflow after germination. Put it in your brightest suitable spot or under a plant-growing light. If you use a cover to hold humidity during germination, remove or vent it as seedlings grow so excess moisture does not linger.
- Check every day. Look for drying mix, pooled water, or crowded seedlings leaning strongly toward a light source. Adjust water and placement before the tray becomes stressed.
- Harvest cleanly. When the crop has reached the stage recommended for that variety, cut stems just above the growing medium with clean, sharp scissors or a knife. Rinse the harvested greens with fresh drinking water before eating.
Common mistakes and practical exceptions
- Using garden soil: it is heavier and less suited to a shallow indoor growing tray than a lightweight soilless mix.
- Keeping the tray too wet: microgreens need moisture, but standing water and stale air make a tray harder to manage. Let excess water drain and keep air moving around the tray.
- Expecting every crop to finish at the same time: growth speed depends on the species, temperature, light, and seed density. Follow the seed supplier’s guidance rather than a fixed harvest date.
- Reusing an unwashed tray: wash reusable trays and containers between crops before starting the next sowing.
- Trying to regrow the cut tray: microgreens are generally a one-time harvest. Start a fresh tray for the next crop.
A simple apartment routine
Start with one small tray, not a shelf full of trays. Check it at the same time each day, keep the growing medium evenly moist, and make a note of how many days your chosen seed takes in your own home. Once you can grow and harvest one tray reliably, sow a second tray a few days later for a staggered supply.
Related guides
- Best Vegetables for Small Spaces — choose other beginner crops for a balcony, patio, or small outdoor area.
- How to Choose the Right Pot Size for Container Plants — learn when a deeper container is better for full-size plants.
- Beginner-Friendly Herbs for Small Spaces — try a longer-term edible project after your first indoor tray.
Sources and review date
University of Maryland Extension: Growing Microgreens and Baby Greens Indoors. Used for growing media, containers, moisture, airflow, harvesting, and indoor growing context.
Penn State Extension: A Step-By-Step Guide for Growing Microgreens at Home. Used for home-growing supplies, light, drainage, and harvest context.
Last reviewed: July 25, 2026. This is general beginner gardening information. Follow seed-supplier directions and food-safety guidance for the specific seed and growing method you choose.