Next day delivery available on most products. Order before 4pm Mon-Thurs.

Save 17%
Rootgrow Bulb Starter

RHS Rootgrow Bulb Starter (500g)

In stock
RRP: 11.50
Price: 9.59
You save: €1.91 (17%)
Bulk Discounts
Quantity 3+
Price 8.92

video guides available

Rootgrow Bulb Starter - Description

  • Ideal for Summer & Spring Flowering Bulbs
  • Ensures the Ideal Biological Conditions for Bulbs to Germinate, Grow & Flower
  • Contains Mycorrhizal Fungi
  • Also Contains Vermiculite to Ensure Good Drainage at Root Zone
  • Also Contains Seaweed Meal - A Source of Natural Auxins which Stimulate Root Development
  • Also contains Humates - Organic Acids for the Bulb & Soil Micro Organisms
  • RHS Branded
  • Volume: 500g
  • One Pouch Treats upto 50 Bulbs
  • Friendly Fungus that Lives on Plant Roots & Aids Nutrient Uptake in Plants
  • They are Essential for Plant Growth
  • By Using Rootgrow Mycorrhizal Fungi you can Significantly Boost Bulb's Performance

Rootgrow Bulb Starter - Uses

Rootgrow bulb starter is designed to treat bulbs at time of planting such as

  • Daffodils
  • Crocus
  • Tulips
  • Lilies & more

Will also work on roots, rhizomes, tubers & corns such as

  • Agapanthus
  • Iris
  • Echinacea & more

Rootgrow Bulb Starter - Advantages

  • Gives bulbs a boost
  • Encourages better establishment & flowering
  • Vermiculite improves drainage
  • Seaweed provides nutrients
  • Fungi aids nutrient uptake
  • Within 4 weeks, treated plants will develop extensive secondary root system
  • Specially designed for bulbous plants
  • Offers superior plant establishment with better natural vigour
  • Allows plants overcome transplanting stresses more successfully
  • A single application of Rootgrow will support a plant for it's entire lifetime
  • These fungi are completely natural, organic & native to our soils

Rootgrow Bulb Starter - Application

  • See label for full details
  • Apply small amount to the base of each planting hole
  • Position bulb on top
  • Ensure bulb is planted to a depth of 3 times the bulb's height
  • 500g will treat approximately 50 bulbs

Rootgrow Bulb Starter - Notes

  • Mycorrhizal Fungi are widespread throughout nature
  • They are fundamental in normal plant growth & development
  • Over 90% of all plants associate with these organisms
  • They allow sustained nutrient uptake & water supply
  • After applying to the soil, the fungi in rootgrow begin to colonise the plant's roots
  • They extend the plant's root system into the surrounding soil via an extensive network of fungal filaments
    • Up to 20 metres
  • These thread-like filaments extract nutrients & water from the soil & exchange them for carbon in the plant

Note: We don't ship plants on Fridays due to the extended period they would remain without light & water

Here at we aim to provide a fast, reliable & low cost delivery service

Shipping Options & Rates

  • Standard Courier Delivery With Fastway (2-4 Working Days)
    • Cost is €4.95 on Orders Below €75
    • Free Delivery on Orders Above €75
    • Rep. of Ireland & Northern Ireland Only
  • Express Courier Delivery With Fastway (1-2 Working Days)
    • Cost is €4.50 extra for express delivery
    • This service guarantees that any order placed before 4pm will ship from our depot the same day on the next day delivery service *
    • Rep. of Ireland & Northern Ireland Only
  • Express Delivery With DPD (1-2 Working Days)
    • Cost is €11.50 for unders below €75
    • Cost is €6.55 for orders above €75
    • This service guarantees that any order placed before 4pm will ship from our depot the same day on the next day delivery service *
    • Rep. of Ireland & Northern Ireland Only
    • This services comes with text alerts and timed delivery slots which the customer can change to suit themselves
  • 'Seed' Postal Delivery Option ***
    • Cost is €2 - Packet of Seeds ONLY Orders
    • Note: Does Not Apply to Seed Potatoes, Bulbs or Sets ***
    • Rep. of Ireland & Northern Ireland Only
  • Great Britain
    • Cost is €10
    • UK shipping fee covers parcels up to a total weight of 20Kg
  • Western Europe
    • Note: There is no free delivery for Western Europe Deliveries

Bulk Bags & Large Item Pallet Deliveries

  • Bulk bags & large orders are shipped via pallet couriers on a rigid lorry
  • Delivery is to kerbside only
  • If road access to your site is tight, then please advise us before purchasing
  • Please Note: We cannot guarantee next day delivery on pallet deliveries
  • Also, we cannot guarantee delivery on a specific day (Please allow 1-3 days for delivery)
  • It's always best to order well in advance to avoid disappointment
  • Cancellation of pallets when items are already in transit will incur a 40 euro per pallet cancellation fee (To cover return delivery costs)
  • Where pallet delivery can not be made due to site access, a 40 euro per pallet cancellation fee will apply (To cover return delivery costs)

International Delivery Prices & Times

  • Please note max weights below, heavier orders may require additional payment
  • We will contact you to discuss, if max weight of order exceeded


  • The shipping fee is fixed for an order, regardless of the number of items bought
  • All courier orders require signed proof of delivery & the customer must be contactable by phone
  • We do not offer a weekend delivery service (Mon-Fri Only excl. Bank Holidays)
  • * Our courier achieves a 98% success rate on next day deliveries
  • ** Seed postal option applies to seed ONLY orders & is available in all 32 counties of Ireland
  • *** Does not apply to seed potatoes, bulbs or sets
Orders over €75, get
Get Free Delivery free delivery

Associated Products Associated Products