Year-Round Indoor Hydroponics Planting Schedule with Crop Lists, Lighting, and Nutrient Tips

Enjoy fresh, healthy harvests every month by following this detailed planting schedule tailored for indoor hydroponic gardening. Optimize crop selection, lighting, and nutrients seasonally to maximize growth and yields.

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January – March: Cool-Season Greens & Seedlings

Crops: Lettuce (Butterhead, Romaine), Spinach, Kale, Arugula, Swiss Chard
Lighting: Full-spectrum LED grow lights, 12–18 inches above plants, 14–16 hours/day
Nutrients: High nitrogen mix (e.g., N-P-K 10-5-10), pH 5.8, EC 1.2–1.6
Tips: Keep temperatures 65–75°F; start seedlings in rockwool cubes or similar medium.

April – June: Herbs & Leafy Greens Transition

Crops: Basil, Cilantro, Parsley, Mint, Dill, continued lettuce/spinach
Lighting: Maintain 12–16 inches light distance, 14–16 hours/day, add blue light spectrum for compact growth
Nutrients: Balanced NPK (e.g., 8-8-8), increased calcium and magnesium, pH 5.8–6.0, EC 1.4–1.8
Tips: Monitor humidity around 50%; use timers to standardize photoperiod.

July – September: Fruiting Plants & Flowering Support

Crops: Cherry Tomatoes, Bell Peppers, Strawberries, Dwarf Cucumbers
Lighting: Stronger LEDs at 8–12 inches, 16–18 hours/day, full-spectrum with extra red light for flowering
Nutrients: Shift to more phosphorus and potassium (e.g., N-P-K 5-15-15), pH 6.0, EC 1.8–2.2
Tips: Support plants with trellises; maintain airflow to reduce disease.

October – December: Microgreens & Quick-Harvest Herbs

Crops: Radish Microgreens, Sunflower Microgreens, Watercress, Thyme, Oregano
Lighting: Lower intensity LEDs at 16–20 inches, 12–14 hours/day
Nutrients: Mild balanced nutrients (e.g., 7-7-7), EC 0.8–1.2, pH 5.5–6.0
Tips: Short growth cycles for quick turnovers; clean system reservoirs monthly.

Lighting & Nutrient Management Summary

• Use LED grow lights with adjustable height and full-spectrum coverage for best results.
  • VIVOSUN T5 Grow Lights are a reliable option with multiple size options and the ability to link together if you expand later.
• Hydroponics lives and dies by pH. Keep it between 5.5 and 6.5 for optimal nutrient uptake using something like Bloom City pH Control Kit.
• Refresh nutrient solutions weekly and clean reservoirs monthly.
  • Check out the easy to use General Hydroponics Flora Series an industry standard 3-part mix suitable for all growth stages.
• Adjust nutrient EC values based on plant stage from 0.8 (seedlings) to 2.2 (fruiting).
• Use timers for consistent light cycles tailored by crop type and growth stage.
  • For automation tips see our previous post: Beginners Guide to Hydroponic Automation

Dee

Dee Valentin is a cybersecurity professional turned author and creator, formerly based in Arizona and now living in Central Michigan. With a background in information security and technology innovation, Dee writes approachable guides that help readers use AI and automation to make work and life more efficient. Outside the digital world, Dee is an avid gardener with a special focus on hydroponics and sustainable growing systems. Whether experimenting with new plant setups or sharing tips for soil‑free harvests, Dee blends technology and nature to inspire others to live more creatively and sustainably.

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