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An aquatic plant, which, when submerged, releases oxygen into the water.
The inability of a seed to germinate, particularly when there's been a lack of water.
A complex single cell organism that's common wherever there is water - oceans, lakes, ponds and soil.
A common term for any number of gnat-like flies, which are usually found close to water sources.
An organism, viral, bacterial, fungal or parasitical, that attacks plants. It may be water, air or soil borne, or carried by insects.
Joe Swift demonstrates how to introduce fish into a garden pond, having first checked the cleanliness of the water using a pond testing kit. spring to autumnMore on ponds and water featuresHow to grow marginal pond plantsGrowing marginal plants in a
Decomposed organic matter that provides nutrients for plants and increases the soil's ability to retain water. Humus can be mixed with garden soil and sand to make a potting mixture.
Take 10 minutes first thing in the morning, during the height of summer, to pour water onto the floor of the greenhouse. This simple task creates enough moisture throughout the day to prevent your plants from suffering heat stress.Watering can full
The glacial land form, comprising gravely detritus and stratified drift found at the base and edges of a glacier, and usually with a flow of fresh water. Similar to the scree found at the base of mountains and cliffs.
A bulb-like swelling that occurs at the base of epiphytic plants, such as orchids, where nutrients and water are stored. It's not a true bulb.