GrowPharm - Root Plugs (50 per Bag)

GrowPharm Root Plugs are pre-formed propagation plugs made from coco coir and peat, designed for starting seeds, rooting plant cuttings, and establishing young plants. Their porous, fibrous structure helps retain moisture while providing air spaces for developing roots. Each plug measures approximately 40 mm in diameter and 50 mm in height, with a convenient pre-formed planting hole.

Whether you're propagating houseplants, starting vegetable seedlings, or preparing plants for a hydroponic system, GrowPharm Root Plugs provide a tidy, convenient alternative to filling individual propagation cells with loose growing media.

Why Choose GrowPharm Root Plugs?

• Coco coir and peat blend: Combines moisture-holding organic fibres in a porous propagation medium.
• Balanced moisture and aeration: The fibrous structure helps support the water and oxygen requirements of developing roots.
• Pre-formed planting hole: Makes inserting seeds and cuttings quick and consistent.
• Suitable for seeds and cuttings: Use for seed germination, plant propagation, and establishing young seedlings.
• Minimal root disturbance: Transplant the entire plug once roots have developed, rather than removing the plant from its growing medium.
• Hydroponic and soil applications: Suitable for starting plants destined for potting mixes, coco coir, and appropriately designed hydroponic systems.
• Convenient storage: Supplied dry in a resealable bag for easy storage and handling.

GrowPharm Root Plug Specifications

Dimensions are approximate. Substrate pH and EC are distinct from the pH and EC of the water or nutrient solution used to hydrate the plugs. Published moisture-retention values depend on the testing method.

How to Use GrowPharm Root Plugs

Step 1: Hydrate the Plugs

Place the dry plugs in clean water or a mild nutrient solution until evenly moistened. For general propagation, slightly acidic water around pH 5.5–6.0 is a useful starting point, although individual plants may have different requirements.

If using a nutrient solution for established cuttings or seedlings, an EC of approximately 1.0–1.5 mS/cm may be appropriate for some crops. For sensitive seedlings and freshly germinating seeds, plain water or a much weaker solution is generally preferable.

Step 2: Allow Excess Water to Drain

Remove the hydrated plugs from the water and let any excess drain away. They should feel evenly moist without dripping or sitting in standing water.

Step 3: Insert Seeds or Cuttings

For seeds: Place the seed into the centre hole at the recommended planting depth for the species. Small seeds may require only shallow placement, while some light-dependent seeds should remain near the surface.

For cuttings: Insert the prepared stem into the pre-formed hole. The stem should fit snugly enough to maintain contact with the moist growing medium. If necessary, gently adjust the hole without excessively compressing the plug.

Step 4: Provide Suitable Growing Conditions

Place the plugs in a propagation tray with adequate drainage. Maintain appropriate light, temperature, and humidity for the plant species.

Monitor moisture regularly. Keep the plugs consistently moist during propagation, but avoid prolonged saturation, which can reduce oxygen availability and encourage root problems.

Unrooted cuttings may benefit from a humidity dome. Once seedlings emerge or cuttings begin establishing roots, gradually increase airflow as appropriate.

Step 5: Transplant When Roots Develop

When healthy roots have developed through the plug and the young plant is ready for transplanting, transfer the entire plug into its next growing medium.

There is generally no need to remove the plug from the roots. Keeping it intact helps reduce disturbance to delicate new root growth.

What Can You Grow in Root Plugs?

GrowPharm Root Plugs are suitable for many common propagation projects, including:

• Houseplants: Pothos, Philodendron, Monstera, Syngonium, and other suitable stem cuttings.
• Vegetables: Tomatoes, peppers, cucumbers, lettuce, and other seed-started crops.
• Herbs: Basil, oregano, thyme, parsley, and many other culinary herbs.
• Ornamentals: Coleus, flowering annuals, and suitable softwood cuttings.
• Hydroponic crops: Starting seedlings before transferring them into compatible hydroponic growing systems.

Rooting and germination requirements vary by species. Some plants require specialised propagation conditions or a different growing medium.

Can GrowPharm Root Plugs Be Used for Hydroponics?

Yes. GrowPharm Root Plugs can be used to start seeds and cuttings for hydroponic growing. Once sufficient roots have developed, the plugs can be transferred into suitable net pots, growing media, or propagation systems.

Because these plugs contain organic fibres, they are particularly useful for starting plants before transplanting into a hydroponic system. In recirculating systems, keep loose organic particles out of pumps, irrigation lines, and reservoirs wherever possible.

For deep water culture (DWC), nutrient film technique (NFT), and other water-based systems, position the plug so that developing roots can access moisture without keeping the entire plug continuously submerged.

Root Plug Propagation Tips for Calgary Growers

Starting seeds and cuttings indoors is particularly useful in Calgary and throughout Alberta, where the outdoor growing season is relatively short and indoor heating can create very dry conditions.

• Monitor indoor humidity: Heated indoor air can cause exposed propagation plugs to dry faster than expected.
• Use suitable grow lighting: Seedlings need adequate light to encourage compact, healthy growth, especially during winter.
• Check root-zone temperatures: Propagation trays placed near cold windows or on unheated surfaces may experience slower rooting and germination.
• Avoid overwatering: A humidity dome can reduce moisture loss, but it does not eliminate the need for drainage and ventilation.
• Harden off outdoor plants: Gradually acclimatise indoor-grown seedlings to outdoor sunlight, wind, and temperature changes before planting outside.

Frequently Asked Questions About Root Plugs

Do I Need to Soak Root Plugs Before Using Them?

Yes. GrowPharm Root Plugs are supplied dry and should be hydrated before planting. Soak until evenly moist, then allow excess water to drain. Avoid planting directly into completely dry plugs.

Can I Use Root Plugs for Both Seeds and Cuttings?

Yes. The pre-formed centre hole accommodates seeds and suitable stem cuttings. Adjust planting depth, moisture, humidity, and temperature to match the plant being propagated.

Do Root Plugs Need Fertilizer?

Not necessarily. Many seeds contain enough stored nutrients for initial germination. Once seedlings develop and begin actively growing, or cuttings establish roots, a dilute fertilizer solution may be beneficial. Nutrient requirements depend on the species and growth stage.

Can I Plant the Entire Root Plug Into Soil?

Yes. When the plant is ready for transplanting, the plug can generally be placed directly into an appropriate potting mix without removing it from the roots. Keep the surrounding growing medium evenly moist while roots establish.

How Often Should I Water Root Plugs?

There is no universal watering schedule. Watering frequency depends on temperature, humidity, airflow, lighting, and plant size. Check the plugs regularly and rehydrate as needed to maintain suitable moisture without waterlogging.

Are Root Plugs Better Than Rockwool?

Both are useful propagation media, but they differ in composition. GrowPharm Root Plugs contain coco coir and peat, while horticultural rockwool is made from spun mineral fibres. Root plugs may appeal to growers who prefer organic-fibre propagation media, while rockwool offers different water-holding and handling characteristics. Neither is automatically better for every crop or growing system.

Can Root Plugs Be Reused?

Root plugs are generally intended for single-use propagation. Once roots grow through a plug, the plant and plug are usually transplanted together. Reusing plugs from unsuccessful or diseased plants is not recommended.

How Should I Store Unused Root Plugs?

Keep unused plugs dry in their resealable bag, away from direct sunlight, excessive humidity, and temperature extremes. Store in a cool, dark location above 4°C.