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VIVOSUN Seed Rooters grow medium cubes for seedlings with healthy root development.
Vivosun Seed Rooter specs: Before soaking: 1.34" wide, 1.77" tall, 0.86" bottom. After soaking: 1.53" wide, 1.97" tall, 1.02" bottom.
Vivosun seed starter tray with peat plugs, featuring "pH-Ready, Seed-Safe Start" text.
Vivosun Seed Rooter: Healthy roots grow outward, not tangled, in pots with even density and pore structure.
Vivosun Seed Rooter: Healthy plant roots in soil, with H2O & O2 bubbles, promoting faster germination and stronger roots.
Vivosun seed starter trays with seedlings growing under a grow light, and tray with young plants.
VIVOSUN Seed Rooters grow medium cubes for seedlings with healthy root development.
Vivosun Seed Rooter specs: Before soaking: 1.34
Vivosun seed starter tray with peat plugs, featuring
Vivosun Seed Rooter: Healthy roots grow outward, not tangled, in pots with even density and pore structure.
Vivosun Seed Rooter: Healthy plant roots in soil, with H2O & O2 bubbles, promoting faster germination and stronger roots.
Vivosun seed starter trays with seedlings growing under a grow light, and tray with young plants.
Ask Sage about this product

Vivosun Seed Rooter Plant Starter Plugs - 40 Cubes

Official VIVOSUN Dealer Model: WEB-VSS-SSTRR-40
$29.99 USD
  • 40 cubes per pack designed for high-density seedling production.
  • Pre-buffered to a 5.5 to 6.5 pH range for immediate use.
  • Engineered to fit Vivosun VSeed S40 smart seedling systems.
  • View More Details

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THROUGH THE Cultivator's LENS Hands-On Evaluation

  • You are starting seeds in a controlled environment because you want to stop dealing with inconsistent moisture levels that kill off your sprouts early.
  • You are choosing a pre-buffered medium because you need a clean start without the trial and error of manually balancing pH every time you plant.

  • The uniform density here is the real winner, as it prevents those annoying air pockets that cause roots to stall.
  • It is a smart move to use these with the matching VSeed trays because the fit keeps the moisture level perfectly even.

  • Growers who used to struggle with soil-borne mess say this switch made their early-stage workflow much faster and cleaner.
  • Users who were tired of seedlings burning from early nutrient spikes say these plugs kept their plants stable from the start.

Vivosun Seed Rooter Plant Starter Plugs

Weak, uneven root development often starts before a seedling ever leaves the tray — inconsistent moisture, poor aeration, or the wrong pH can set plants back before they've had a chance to establish. VIVOSUN Seed Rooter Plant Starter Plugs solve that at the source with 40 purpose-built cubes engineered for an optimized air-to-water balance, delivering the oxygen and moisture roots need from day one. Designed specifically for the Vivosun VSeed S40 Smart Seedling Box and compatible Seed Starter Trays, these plugs give growers a clean, reliable foundation for stronger germination and more uniform early root growth.

Each cube arrives pre-buffered to a stable 5.5–6.5 pH range, so seeds or cuttings can go in immediately without soaking, rinsing, or manual pH adjustment. The low-EC, nutrient-free composition eliminates the risk of nutrient burn during the most sensitive growth stage, letting seedlings rely on their own stored energy. Even density and consistent pore distribution guide roots to spread outward naturally, reducing tangling and supporting healthier, more developed root systems as plants mature.

Features

VIVOSUN Seed Rooter starter plugs 40-cube pack
VIVOSUN Seed Rooter cubes in seed starter tray
VIVOSUN Seed Rooter cube close-up texture
VIVOSUN Seed Rooter plugs with seedling roots
🌱
Fast, Reliable Germination

Balanced air and moisture delivery keeps cubes evenly hydrated while supplying oxygen to the roots, helping seeds sprout faster without waterlogging.

⚖️
pH-Ready for Easy Starts

Pre-buffered to a stable 5.5–6.5 pH range, so seeds or cuttings can go in right away with no soaking, rinsing, or extra adjustment.

🚫
No Nutrient Burn Risk

Low EC and nutrient-free by design, protecting delicate young plants during the most sensitive stage of early growth.

🌿
Stronger, Healthier Roots

Even density and consistent pore distribution guide roots to grow outward naturally, reducing tangling for well-developed root systems.

💧
Soil-Free & VGrow Compatible

Mess-free growing medium that works seamlessly with the VGrow DWC Hydroponics System for starting vegetables and garden plants indoors or outdoors.

📦
Built for VSeed Systems

Purpose-sized for the Vivosun VSeed S40 Smart Seedling Box and compatible Seed Starter Trays for a clean, reliable fit every time.

Specifications

Specification Value
Top Width (Before Soaking) 1.34 in.
Top Width (After Soaking) 1.53 in.
Bottom Width (Before Soaking) 0.86 in.
Bottom Width (After Soaking) 1.02 in.
Height (Before Soaking) 1.77 in.
Height (After Soaking) 1.97 in.
pH Range 5.5–6.5 (Pre-Buffered)
Plugs per Bag 40
Compatibility Vivosun VSeed S40 Smart Seedling Box, Seed Starter Trays, VGrow DWC Hydroponics System

Warranty

This item is sold as-is and does not include a manufacturer's warranty.

Get Started in 3 Easy Steps

1
Soak the Cube

Place the Seed Rooter cube into your tray and saturate it fully with water or nutrient solution (pH 5.5–6.0) until evenly moist throughout.

2
Plant the Seed or Cutting

Insert the sprouted seed or cutting into the pre-formed hole at the top of the cube, positioning roots facing downward for direct contact with moisture.

3
Cover and Monitor

Place the dome or germination cover over the tray to maintain humidity, then monitor moisture levels as roots establish and develop.

Frequently Asked Questions

Do I need to rinse or adjust the pH before using these cubes? +

No. Each cube is pre-buffered to a stable 5.5–6.5 pH range, so you can start seeds or cuttings right away without soaking, rinsing, or extra pH adjustment.

Are these compatible with the VSeed Smart Seedling Box? +

Yes. These 40-cube starter plugs are purpose-built to fit the Vivosun VSeed S40 Smart Seedling Box as well as compatible Seed Starter Trays.

Will these cubes cause nutrient burn on young seedlings? +

No. The cubes are low-EC and nutrient-free by design, protecting delicate young plants during their most sensitive growth stage.

Can I use these cubes for cuttings as well as seeds? +

Yes. The balanced air-to-water ratio and even pore distribution support root development for both seed starting and cloning cuttings.

How many cubes are included per bag? +

Each bag includes 40 Seed Rooter plant starter plugs, sized for a full 40-cell seed starter tray.

Can these cubes be used with hydroponic systems? +

Yes. The soil-free growing medium is designed to work seamlessly with the VGrow DWC Hydroponics System, in addition to standard seed starter trays.

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Questions About This Product?

Our specialists are happy to help. Call us or send a message and we'll get back to you within one business day (most of the time within a few hours.)

Call (360) 800-5535

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