Category
Tree Root Watering
RWT deep root irrigators feed water, air and nutrients straight into the root zone – zero evaporation, zero runoff. Four sizes from shrubs to mature trees.
Direct answer: the RWT irrigator is a perforated tube installed at the root ball with a mesh filter basket. Water and fertilizer go straight to the deep root zone – the catalog-stated benefit is stronger downward root growth and no surface runoff. Choose RWT-30 for shrubs and RWT-86 for mature trees.
| Model | Suitable for | Install size (per catalog) |
|---|---|---|
| RWT-30 | Shrubs and new planting | Ø10 cm, depth 10 cm |
| RWT-49 | Small trees / shrubs | Ø15 cm, depth 15 cm |
| RWT-68 | Large shrubs / small trees | Ø25 cm, depth 25 cm |
| RWT-86 | Mature trees | Ø25 cm, depth 35 cm |
How often should I water a newly planted tree with a root irrigator?
Deep, infrequent watering beats daily splashes: fill the RWT irrigator 1-2 times per week in the first season, adjusting for soil type. The SL soil-moisture sensor can automate the decision.
Can I fertilize through the root irrigator?
Yes – liquid feed poured into the RWT tube reaches the active root zone directly, with far less loss than surface fertilizing.
Does the tube clog?
The built-in perforated filter basket blocks coarse debris; flush the tube during normal system maintenance.
Market terms (live harvest, Bing, Sep 2026):
EN: tree root watering, deep root watering, tree root watering spike, root waterer for trees, deep root watering system for trees
DE: baumbewässerung, wurzelgießer
FR: arrosage profond arbre, tuteur arrosage arbre
EN: tree root watering, deep root watering, tree root watering spike, root waterer for trees, deep root watering system for trees
DE: baumbewässerung, wurzelgießer
FR: arrosage profond arbre, tuteur arrosage arbre
Planning an irrigation project?
Send us your area, water source and crop or turf type – our engineers will reply with a system proposal.
Frequently asked questions
How do deep root irrigators work for new trees?
RWT irrigators deliver water directly to the root zone below the soil surface, cutting evaporation losses — see our deep root watering guide for sizing and spacing.
Wholesale & distributor program
RainWell supplies this line to irrigation distributors, landscape contractors and OEM assemblers worldwide. Mixed trial orders, wholesale price tiers and private label options are available — request the distributor price sheet with your market and expected volumes.