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82% (27 Reviews)

Only one application required

Lasts lifetime of plant

Healthier and more even growth

Better uptake of nutrients leading to better flowers, fruit and vegetables

Increased resistance to damping off

Don't forget to check out our rootgrow™ Seed Companion information page

Fulfilled and sold by Thompson & Morgan


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rootgrow™ Seed & Bulb companion is a specially formulated blend of UK origin mycorrhizal fungi that will benefit virtually all seeds, plants and bulbs (except brassicas, rhododendrons, azaleas, heathers, cranberries or blueberries). In a matter of weeks seedlings will develop a huge secondary mycorrhizal root system, supporting your plants for their entire lifetime, supplying nutrients that will greatly enhance flowering and fruiting

1 x 80g pack (24335)

How to use Small Seeds: 1. Fill the seed tray or 9cm pot with compost. 2. Sprinkle 10g per seed tray / 1g per 9cm pot evenly over the compost. 3. Cover with 1cm of compost. 4. Sow the seeds on this level of compost as directed on the seed packet. Larger Seeds & Bulbs (using a dibber): 1. Dib a hole 1cm deeper than the recommended planting depth. 2. Sprinkle a pinch (5ml) of rootgrow into the hole. 3. Sprinkle 1cm of compost into the hole. 4. Plant the seed or bulb as directed on packet. Seeds sown into soil: 1. Dig the planting trench twice the recommended depth. 2. Sprinkle a line of rootgrow into the bottom of the trench. 3. Backfill halfway with soil and plant the seeds at the recommended depth. Also suitable for container and plug plants: 1. Sprinkle rootgrow evenly into the base of the hole prior to transplanting.

Seeds and garden supplies will normally be delivered within the time period stated against each product as detailed above. Plants, bulbs, corms, tubers, shrubs, trees, potatoes, etc. are delivered at the appropriate time for planting or potting on. Delivery times will be stated on the product page above, or in your order acknowledgement page and email.

Orders for packets of seed incur a delivery charge of £2.99.

Orders which include any other products will incur a delivery charge of £4.99.

Where an order includes both packets of seeds and other products, a maximum delivery charge of £6.99 will apply - regardless of the number of items ordered.

Large items may incur a higher delivery charge - this will be displayed in your shopping basket.

Please see our Delivery page for further details, and more information on different charges that may apply to certain destinations.

For more information on how we send your plants please visit our Helpful Guide on plant sizes.


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