Broadleaf P4 Water Retention Granules are premium, super-absorbent polymers designed to improve moisture retention in soils, composts, and planting media. These highly effective granules absorb and store hundreds of times their weight in water, gradually releasing it back to plant roots as the soil dries out. Ideal for reducing watering frequency and protecting plants during dry spells, Broadleaf P4 is trusted by professionals across landscaping, horticulture, and commercial planting.
Perfect for gardeners, landscape contractors, tree planters, and green roof installers, these water-retention granules are especially effective in dry, sandy, or free-draining soils and in environments where water conservation is essential. Incorporating Broadleaf P4 into the planting zone enhances drought tolerance, reduces transplant stress, and supports robust root development.
Features & Benefits
Superior water retention – Holds water in the root zone, reducing drought stress
Cuts watering frequency – Ideal for dry climates or exposed sites
Improves plant survival rates – Supports early establishment and growth
Cost-effective – One application lasts for up to 5 years in the soil
Versatile – Use in planting pits, composts, hanging baskets, tree pits, and more
Environmentally friendly – Helps conserve water and supports sustainable landscaping
Applications & Application Rates
Suitable for:
Tree pits and shrub planting
Hanging baskets, planters, and window boxes
Bedding plants and container-grown crops
Green roofs, landscaping beds, and embankments
Rewilding and planting schemes in drought-prone areas
Application Rates:
Tree/shrub planting: Mix 50g of granules per planting hole (up to 1kg per cubic metre of soil)
Container plants: 1–3g per litre of compost
Large beds or borders: 1kg per 10–20m² depending on soil type and exposure
Granules should be mixed thoroughly into the root zone or growing media before planting. Do not apply dry granules directly beneath or next to roots without mixing – expansion may cause root disturbance.
Formulation & How to Apply
Formulation: Cross-linked polyacrylamide copolymer crystals
How to apply: Mix granules uniformly into the soil or compost at the time of planting. Once watered, the granules swell to form water-holding gel particles that release moisture gradually to plant roots.
Longevity: Effective in soil for up to 5 years depending on conditions.
Storage: Keep in a dry, sealed container and protect from moisture before use.

Specification Details
Product Name Broadleaf P4 Water Retention Granules
Form Fine crystal/polymer granules
Function Soil moisture retention
Application Method Mix into soil or compost before planting
Application Rates 1–3g/L compost or 1kg/10–20m² soil
Longevity Up to 5 years in soil
Bag Size 25kg
Target Plants Trees, shrubs, bedding plants, container stock