Plants which indicate the type of the soil

The table below comprises some of the most popular indigenous weeds. They are also indicators of the type and quality of the soil when they are wildy growing.

Name of the plant	Photo	What do they show?	Observations
Field Bindweed (Convolvus arvensis)		Heavy clay soil, rich in Nitrogen	Avoid using the rotary tiller because it multiplies the fragments of the rhizomes which root very quickly.
Lawn Daisy (Bellis perennis)		Clay soil with an acidic tendency	This plant is not at all competing with the others.
Smooth Pigweed (Amaranthus hybridus)		Soil rich in Nitrogen	The plant produces many seeds and becomes quickly invasive.
Common Broom (Cytisus scoparius)		Acid soil, often sandy	Usually good soils for strawberries and asparagus.
Common Dandelion (taraxacum officinale)		Heavy clay soil, rather compact, rich in organic matter.	While it is not competing with other plants, it still needs to be removed completely from the ground.
Couch grass (Elytrigia spp)		Exhausted soil, too mechanically cultivated, too rich in potassium and nitrogen	Avoid using the rotary tiller because each fragment produces a new plant.
Common purslane (Portulaca oleracea)		Sandy soil which does not retain water, showing first signs of erosion	Rather a Southern type of plant which can be consumed fresh or prepared. Rich in vitamins.
Common Horsetail (Equisetum arvensis)		Wet soil, insufficinetly aerated	Horsetail indicates that a high flow of water.
Wild carrot (Daucus carota)		Lime dry soil	Do not remove all the plants because it is a host for various useful butterflies and insects.
Flanders poppy (Papaver rhoeas)		Humus rich soil	Indicates a good agricultural soil.