Welcome to the Weeds course.

Scroll down to study all the common weeds found in the UK, making sure to understand the main causes and both cultural and chemical controls.

Lesson notes

Weeds - Study each weed type and most importantly how they look at different stages of development.

Main causes - learn the main causes of each type of weed.

Other factors - understand how other factors increase the likelihood of turf weeds.

Control - learn different types of maintenance procedures that help control and reduce the incidence of weeds.

Chemical treatments - Understand what type of chemical control is available for each weed.


Common name: Ribwort Plantain

Botanical name: Plantago lanceolata

Main causes: compacted soil

Cultural control: look to address soil compaction

Chemical control: MCPA, 2,4-D, mecoprop-P


Common name: Selfheal

Botanical name: Prunella vulgaris

Main causes: can be found in all types of turf and will tolerate both dry and moist soils

Timing: flowers from June to October

Chemical control: MCPA, 2,4-D


Common name: Common Ragwort

Botanical name: Senecio jacobaea

Precautions: weed is poisonous to cattle and horses

Timing: seen from spring to autumn. Treat in late spring or autumn

Cultural control: see defra - code of practice on how to prevent the spread of ragwort.

Chemical control: 2,4-D pre flowering, MCPA

(see defra code of practice)

Shepherd's Purse

Common name: Shepherd's Purse

Botanical name: Capsella bursa-pastoris

Chemical control: MCPA


Common name: Speedwell

Botanical name: Veronica spp.

Main causes: Boost grass growth to discourage the spread of the weed

Timing flowers: from early spring onwards;

Treat: spring-autumn,

Chemical control: fluroxypyr, florasulam,


Common name: Yarrow

Botanical name: Achillea millefolium

Main causes: dry or poor soil conditions and lack of plant nutrients

Timing: Spring to Autumn

Cultural control : Yarrow is a difficult weed to control once it is established in lawn grasses or turf so good lawn care is an effective preventative measure

Chemical control: MCPA, 2,4-D

Yellow Suckling Clover

Common name: Yellow Suckling Clover

Lesser trefoil

Botanical name: Trifolium dubium

Main causes: nutrient deficient soils and ones which are non-acidic.

Timing: flowers from May to October

Chemical control: florasulam, fluroxypyr


Common name: Pearlwort

Botanical name: Sagina procumbens

Main causes: can be found in all types of conditions especially moist, wet lawns and turf where frequent close, mowing is the norm.

Timing flowering : April to September

Cultural control: Raise height of cut.

Chemical control: florasulam, fluroxypyr, 2,4-D


Common name: Buttercup

Botanical name: Ranunculus repens

Timing: Treat in spring/summer

Cultural control: Dense Sward

Chemical control – 2,4-D, mecoprop-P, MCPA


Common name: Clover, trefoil, medick

Botanical name: Trifolium spp.

Medicago spp.

Lotus corniculatus

Timing: Seen year round, treat in summer

Chemical control: fluroxypyr, florasulam


Common name: Lawn Daisy

Botanical name: Bellis perennis

Timing: Blooms from early/midsummer

Chemical control: 2,4-D, fluroxypyr, florasulam


Common name: Dandelion

Botanical name: Taraxacum

Timing: Flowering spring onwards,

Seeding summer

Cultural control: Dense Sward

Chemical control: 2,4-D, MCPA, fluroxypyr, florasulam

Field Woodrush

Common name: Field Woodrush

Botanical name: Luzula campestris

Main cause: associated with acidic soils

Timing: Brown flower heads seen in spring;

Treat: in summer

Cultural control: Increase soil pH

Chemical control: Difficult to control

Greater Plantain

Common name: Greater plantain

Botanical name: Plantago major

Main causes: Associated with compacted soil

Cultural control: Look to address compaction

Chemical control – MCPA, 2,4-D, mecoprop-P

Mouse Eared-Chickweed

Common name: Mouse Eared Chickweed

Botanical name: Cerastium

Chemical control: 2,4-D, mecoprop-P, florasulam, fluroxypyr

Parsley Piert

Common name: Parsley Piert

Botanical name: Aphanes arvensis

Main causes: prefers dry, nutrient deficient sandy soils that are mown very short

Timing : Germinates in the autumn

Cultural control: Increase moisture and fertility of soil, raise height of cut.

Chemical control – florasulam, fluroxypyr

All course information and chemical recommendations are taken from product labels and are not based on agrovista amenity advice. This information is correct and true as of 28/4/21.