kratky-method-plants

Hydroponic

Hydroponic Swiss Chard: Complete Grow Guide
ByFaisal Habib

Home > Hydroponic Systems > Hydroponic Swiss Chard: Complete Grow Guide Last Updated: July 2026 | Reviewed for Chenopodiaceae mineral assimilation, betalain pigment synthesis, and indoor EC targets Quick Answer: Swiss chard (*Beta vulgaris* subsp. *vulgaris*) is a highly productive, heat-tolerant leafy green that yields continuous harvests in 28 to 35 days from seed. Grow Swiss chard in passive Kratky jars or active Deep Water Culture (DWC) maintaining a reservoir pH of 6.0 to 6.5 and an EC of 1.8 to 2.2 mS/cm (900–1100 PPM). Unlike lettuce, chard requires higher magnesium and iron levels to support intense stalk pigmentation and thick leaf blades. Calculate exact nutrient dosages using our EC…

Read More Hydroponic Swiss Chard: Complete Grow Guide
Hydroponic

How to Grow Green Onions Hydroponically (Fast Indoors)
ByFaisal Habib

Home > Hydroponic Systems > How to Grow Green Onions Hydroponically (Fast Indoors) Last Updated: July 2026 | Reviewed for Allium bulb physiology, sulfur pungent compound synthesis, and Kratky nutrient stability Quick Answer: Green onions (scallions) are among the fastest hydroponic crops, maturing in just 14 to 21 days from kitchen scrap bulbs or 45 to 50 days from seed. Grow them in passive Kratky glass jars or active Deep Water Culture (DWC) maintaining a water pH of 6.0 to 6.8 and an EC of 1.4 to 1.8 mS/cm (700–900 PPM). Ensure white bulbs stay suspended above the water line to prevent bacterial bulb rot. Calculate exact mineral ratios using…

Read More How to Grow Green Onions Hydroponically (Fast Indoors)
Hydroponic

How to Grow Hydroponic Mint: Complete Guide for Beginners
ByFaisal Habib

Home > Hydroponic Systems > How to Grow Hydroponic Mint: Complete Guide for Beginners Last Updated: July 2026 | Reviewed for horticultural and important oil biochemistry accuracy Quick Answer: To grow hydroponic mint successfully indoors, propagate from stem cuttings rooted in clean water or Rockwool cubes rather than slow-germinating seeds. Grow in a Nutrient Film Technique (NFT), Deep Water Culture (DWC), or Ebb and Flow system with a strict nutrient EC between 1.6 and 2.0 mS/cm (800–1000 PPM) and pH balanced between 5.8 and 6.2. Provide 14 to 16 hours of daily LED light (250–300 µmol/m²/s PAR) and harvest tips frequently to encourage bushy growth and prevent stolon root tangling….

Read More How to Grow Hydroponic Mint: Complete Guide for Beginners
Hydroponic

Hydroponic Lettuce: The Complete Guide to Growing Fast, Fresh lettuce
ByFaisal Habib

Menu Menu Home Gardening Tools & Calculators pH Calculator for Hydroponics | Gardening Tools Growth Rate Tracker Seed Germination Timer Plant Spacing

Read More Hydroponic Lettuce: The Complete Guide to Growing Fast, Fresh lettuce