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Bulb Starter RootgrowBulb Starter Rootgrow

Rootgrow Bulb Starter: 500g

Mycorrhizal Fungi for Bulbs, Corms, Tubers

The details

  • 500g
  • Use 5g for small bulbs & corms
  • Use 10g for big bulbs & tubers
  • Improves flowering
  • Excellent for naturalising bulbs
Choose a size


Bulb Starter with Rootgrow™ 500g

Specifically designed for bulbs, corms and tubers, this blend of Mycorrhizal "friendly fungi" improves flowering by helping the roots to absorb nutrients, and increases their resistance to diseases and from drying out. It is especially recommended for bulbs intended for naturalising, and/or if your soil is poor.

Use normal rootgrow for trees and shrubs.


Dig the planting hole as normal (see how deep to plant dry bulbs in Autumn or how to plant bulbs in the green in Spring) and sprinkle Bulb Starter into it. Pop the bulb in, backfill and water.

Use 5g for small bulbs or corms, and 10g for large bulbs or tubers - the instructions on the pack say that you can use up to twice as much, but in our opinion, it won't make a big difference (good old law of diminishing returns), especially if your soil is nice and fertile or if the bulbs in question do well in poor soils anyway. As ever, it's best to do your own tests and see what works in your location.

What to expect

Bareroot plants


Bareroot plants have no soil around the roots. They are light, easy to carry and plant.

Perfect for Winter

The ground tends to be wet in winter, ideal for planting bareroot plants.

Value for money

You pay less for the same size bareroot plants, compared to potted.


Packaged by our experts and sent out by next day delivery.
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