- You cannot place a new order from your country (United States).
search
Container Square 3.4l 15 x 15 x 20cm
The square pot 3.4 litres (15x15x20cm) is a widely used grow container for plants entering the early vegetative stage. This volume provides your plants with adequate root space for strong development after transplanting from a smaller propagation pot. The 20 cm tall side walls give roots the depth required for vigorous branching and efficient nutrient uptake. The square design ensures pots line up tightly in your grow tent or on trays with no wasted floor area. Pair with the matching 18 cm square saucer for clean drainage management. Available at plantandflower.be with fast shipping.
Square Pot 3.4 Litres – Grow Container 15x15x20cm for Early Veg
After the propagation stage, your plants need room to develop the root mass that will drive vegetative growth. The 3.4 litre square pot provides that step-up: sufficient volume for healthy root expansion in the early veg phase, without committing to a full-size final container just yet.
Space optimisation in indoor grows
One of the key advantages of square pots is superior space utilisation. Round pots leave up to 20% of floor area unused, whereas square pots align edge-to-edge with zero gaps. In an 80x80 cm grow tent, 25 pots of 15x15 cm fit in a 5x5 grid, allowing you to pre-grow an entire batch simultaneously. Essential when operating in a space-constrained grow setup where every centimetre counts.
How to use the 3.4 litre pot
Fill the pot with an aerated substrate, create a central planting hole and place your rooted cutting or seedling. Lightly firm the substrate and water immediately after transplanting to establish root contact.
- Soil or light mix: ideal for growers using organic fertilisers with slow nutrient release.
- Coco or perlite: suited for growers wanting precise nutritional control and higher watering frequency.
- Drainage: built-in bottom holes ensure runoff. Pair with an 18 cm square saucer to capture excess water.
When to transplant up
After 2 to 4 weeks, roots will appear at the drainage openings. Transplant into a 6 litre square pot or larger depending on your growth plan. Timely transplanting reduces root stress and keeps vegetative growth on pace.
Order your 3.4 litre square grow pots at plantandflower.be and enjoy fast shipping across Belgium. The right pot at the right time makes the difference.
Which saucer fits the 3.4 litre square pot?
The 18 cm square saucer is the matching size for this pot. It catches drainage water and protects your growing surface. Always use a saucer when not working with a communal tray to prevent roots from sitting in stagnant water.
Can the 3.4 litre square pot serve as a final container?
For small autoflowers or herbs, yes. For most other plants, 3.4 litres is insufficient for the full flowering period. Use this pot as a transitional step and transplant into at least 6 litres for optimal yield.
How many 3.4 litre square pots fit in a 120x120 cm tent?
You can fit 64 pots of 15x15 cm in an 8x8 grid. This configuration suits large-batch pre-growing or SOG (Sea of Green) methods where many small plants are moved to flower quickly.
