Shepherd's purse

Small, low-growing rosettes of shepherd’s purse can easily be overlooked. The plant becomes more distinctive when heart-shaped seed pods form – these contain large quantities of seed, so you may want to remove them from areas of your garden.

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© Shutterstock
© Shutterstock

Quick facts

  • The botanical name for shepherd’s purse is Capsella bursa-pastoris 
  • Chaffinches and other small birds eat the seeds of shepherd’s purse 
  • Shepherd’s purse is fully-hardy throughout the UK and can even flower during mild spells in winter  
  • If you need to control shepherd’s purse, non-chemical methods are easy and effective

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What does shepherd’s purse look like?

Most of the leaves are near ground level, arranged in rosettes. The leaves themselves vary quite a lot, with some having straight edges and some having very dissected ones. Branching flower stems can reach a height of 50cm (20in), but are much shorter in poor, dry soils. Flowers are small and white, each with four petals, and these are followed by characteristic heart-shaped seed pods.  

Shepherd’s purse can be at any stage of growth year-round, but you are most likely to see just the leaves in winter, with flowers in spring, summer and autumn.

The rosette of leaves of a young shepherd's purse plant 
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The flowers and distinctive heart-shaped seed pods
Did you know?

The heart-shaped seed pods resemble purses worn by medieval shepherds, and the copper-coloured seeds within look like tiny coins, hence the common name.

Is shepherd’s purse a weed?

In some areas of a garden shepherd’s purse can be left as it won’t cause significant competition to established plants and it provides food for small birds.  

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A male chaffinch looking for seeds 
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Chequered skipper butterfly on shepherd's purse 
However, shepherd’s purse self-seeds prolifically and can produce several generations a year, so can quickly spread through cultivated beds. This can cause competition for seedlings and small plants. Shepherd’s purse may also be unwanted in veg patches due to it being a host plant for the foliar disease white blister, which affects the health of plants in the cabbage family.
What is a weed?

The term ‘weed’ describes a plant that is growing where it isn’t wanted. Weeds usually thrive in average garden conditions, reproducing and spreading easily. It is up to you to decide what you call a weed and what you choose to retain or remove. 

Frequently asked questions about controlling shepherd’s purse

Here are our answers to your most common questions about dealing with shepherd’s purse:  
 

How invasive is shepherd’s purse?  

Shepherd’s purse spreads by producing lots of seeds, multiple times a year. It is not fussy about where it grows, so seeds have a good chance of germinating if they land on bare soil. However, plants are short-lived and have one main taproot, making them easy to hoe off or pull out. By doing this before plants set seed, you can easily clear an area of shepherd’s purse.   


Do I need to get rid of shepherd’s purse?  

No – you don’t need to eradicate shepherd’s purse from your garden. Among large, established plants, it won’t cause any harm, so you can leave shepherd’s purse to grow in a designated wildflower patch or in unused, rarely visited parts of your garden.  
 
In a veg patch or an area where you wish to grow small plants, shepherd’s purse could be problematic and you might choose to remove it.  


What is the easiest way to kill shepherd’s purse?      

If you have shepherd’s purse growing where it is not wanted, there are a few easy ways to remove it:    
 
  • Hoe off plants – slide the blade of a hoe just under the rosette of basal leaves to sever the taproot and kill the whole plant. Do this on a warm, dry or windy day, so exposed roots dry out quickly. Hoeing removes weeds with minimal soil disturbance.   
  • Pull or fork out plants – this may be a good option if shepherd’s purse is growing among other small plants and hoeing isn’t a feasible option. Hand pulling is usually easy, but on compacted soil you may need to use a hand fork.    
  • Smother plants – prevent seeds from germinating by covering the soil with a mulch of organic matter about 8cm (3in) deep, or a mat of ground cover plants.   

Should I use a weedkiller? 

As shepherd’s purse is easy to control by hoeing and pulling out, there’s no need to use a weedkiller. 

For more information, see our page on Weeds: non-chemical controls.

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