They lack water-retaining mechanisms and are therefore very sensitive to humidity variations of their environment.

Some weekend gardeners now work water-retaining pellets into the soil when they do new planting.

This allows the water-retaining sponge in the sole plate to operate efficiently.

The watershed's soils vary in their permeability and water-retaining capacity.

Moss collections are quite often begun using samples transplanted from the wild in a water-retaining bag.

Succulent plant, water-retaining plants adapted to arid climate or soil conditions.

The dam is the largest earth-filled water-retaining structure in New Zealand.

The volcanic clay has been fired at some point in time to create porous, water-retaining pellets.

Today, these masonry weirs are water-retaining structures as they have been replaced by two shutters.

In 1912, farmers near Biggs, taking advantage of the area's water-retaining clay soil, harvested their first commercial rice crop.

The water-retaining capacity of the gum permits it to swell to 10- to 20-fold and has led to gastrointestinal obstructions.

There are also remnants of ancient gardens where inhabitants used volcanic cinders for water-retaining mulch.

Add water-retaining polymer crystals and slow-release fertilizer like Osmocote, following directions on the labels.

The material is often impregnated with hygroscopic salts such as calcium chloride, to enhance the water-retaining capacity.

Ensure the soil is properly cultivated to improve the structure and water-retaining properties of the soil Keep lawns longer in dryer months.

Nine-hundred-year-old Sinagua ruins in the vicinity include evidence of gardens that used volcanic cinders as a water-retaining mulch.

They are filled with peat-free compost usually with a water-retaining gel and controlled release fertiliser granules.

For instance, the positive part of an image is a water-repelling ("hydrophobic") substance, while the negative image would be water-retaining ("hydrophilic").

Things to look out for on packaging when choosing are: soil or loam-based composts; extra nutrients or plant food; and water-retaining granules.

Some plants, like junipers, usually grow relatively high in the mountains, while water-retaining species like agave and prickly pear are found at lower elevations.

As a consequence of these changes, productivity and production systems declined, as soils became depleted of their nutrients and water-retaining properties.

It is one of many species that make up the inquiline community that thrives within the water-retaining pitcher-shaped leaves of S. purpurea.

Last Tuesday, he completed his latest project: filling 200 tree pits between Riverside Drive and Broadway from 96th to 110th Streets with fresh, water-retaining mulch.

Addition of ferromagnetic particles, hygroscopic water-retaining materials, or other materials can yield a hot melt adhesive which can be activated by microwave heating.