Download the Toolkit: ADAS Asparagus Weed Control v2 - English.pdf

This fact sheet details spring pest control tips for growing asparagus.



Plan for slug management as early as you can to reduce numbers before bud break in uncovered crops. Slugs feed underground in the spring and this can cause spears to be bent when they break ground. Control can be achieved with products containing ferric phosphate (e.g. Sluxx HP).


A key focus now should be weeds as these will soon start to emerge and swift action will help to prevent weeds from establishing and risking overgrowth of the crop. Roundup (glyphosate) can be used over cut stumps to control grasses and other perennials, particularly couch grass. This will work slowly but effectively, even during a mild spell. However, later emerging perennials like thistles will not be effected. Early April is a good time to begin weed sprays to catch late germinating weeds although dry soils conditions will reduce the efficacy of residual herbicides (although drier ground will aid applications and residuals should not be applied to waterlogged fields).

Weed control treatments should be applied while the crop is dormant (before the emergence of spears) to minimize the risk of crop damage. Herbicide choice is limited and the selection of herbicide depends on the range of weeds expected. 

The factsheet is available for downloaded here: Fact sheet - Asparagus Spring Pest Control



Every effort is made to ensure the accuracy of information and recommendations given in these notes.  All applications of crop protection chemicals should be made in accordance with label recommendations, which should be consulted before spraying.  Some of the pesticides mentioned in these notes may not be supported by label recommendations for their use on pumpkin crops but are permissible via Extension of Authorisation for Minor Use (EAMU) in the UK under ‘The Revised Long Term Arrangements For Extension Of Use (2002)’.  In these cases, the use of the pesticide is at the risk of the user and Tyfu Cymru does not accept liability for any loss or damage caused by such use. The references to on-label approvals and EAMUs for use of pesticides in pumpkin crops and are correct at the time of writing. These are subject to change and approval may be withdrawn at any point. It is the grower's responsibility to check approvals before use of pesticides. If in doubt a grower should seek advice from a BASIS qualified advisor - this is available free of charge for eligible growers through the Tyfu Cymru program, please contact us to arrange an appointment – email/telephone advice is also available. 

Image by Matthias Böckel from Pixabay 

Related Pages

Webinar: Nutrient Use Efficiency in Field Vegetables

Tyfu Cymru, Dr Lizzie Sagoo and Chris Creed of ADAS hosted this webinar on nutrient management strategies for field vegetables growers.

3/13/2023 2:04:45 PM

Highlights from 'A Systems Approach to Organic Vegetable Production with Iain Tolhurst'

Iain Tolhurst has been at the forefront of the UK organic farming movement for over 40 years. His 8 ha farm has won many awards including finalist of “Soil farmer of the year”.

12/13/2022 12:00:08 PM

Webinar: Crop Planning and Rotation – Field scale growing

Join Nick Bean (Springfields Produce), John Addams-Williams (Head of Field Operations, Puffin Produce Ltd) and Chris Creed (Senior Horticultural Consultant, ADAS) as they share their methods for success for field scale growing.

9/16/2021 1:38:51 PM

Webinar: Crop Planning and Rotation – Small Growers

Crop rotation helps to reduce a build-up of crop-specific pest and disease problems and it organises groups of crops according to their cultivation needs. Additionally, crop rotations can improve soil structure and organic matter with this in mind cr…

9/16/2021 1:34:16 PM

Webinar: Asparagus; a diversification crop for Wales

The webinar covers establishment and production including organic. Chris Creed from ADAS led this webinar. He was joined by Phil Handley from Mostyn Kitchen Garden and Adrian from Bellis Brother's Farm Shop who gave a grower’s perspective on the bene…

5/14/2021 1:16:57 PM

Webinar: Veg network - Box scheme Financial session

Conventional and organic vegetable box schemes have increased in popularity significantly over recent years and sales topped £100 million last year. Ruth Evans an accountant who sits on the board for Cae Tan led this session. She outlined different…

5/7/2021 11:59:15 AM

Webinar: Soil Health for Field Vegetable Growers

This event aimed to help growers understand how they can measure soil health and what they can do to protect and improve soil health on their farm. The meeting covered: What is soil ‘soil’ health? How can we measure it? Including options for in-field…

3/18/2021 1:59:56 PM

Food Safety: What are the risks from food?

In the UK, we take food safety for granted, and very rarely consider what potential risks could be associated with eating. Safe food (being food that will not cause injury or illness) and is normally a given when food is bought in the UK.

2/10/2021 4:25:18 PM

Webinar: Introduction to Agricultural Standards for Commercial Horticulture Production

This introductory webinar will be an overview of what an agricultural standard is, the main standards in the UK (Red Tractor, M&S Select Farm, LEAF, Soil Association etc) and will cover GlobalG.A.P for those that may want to export. It will give grow…

1/25/2021 3:27:33 PM

Welsh Fruit and Vegetable Production - Baseline Study

This baseline study for Tyfu Cymru was conducted by Dr. Amber Wheeler and looks at the opportunities for Welsh Fruit and Vegetable production.

6/26/2020 4:05:34 PM

Tyfu Cymru and Charles Dowding Q&A - Part 2: No Dig Methods and Advantages for Intensive Cropping

Charles Dowding joins us for a Q&A session with Welsh commercial growers following his walk through of No Dig Methods and Intensive Cropping in part one of the webinar series.

6/12/2020 5:04:55 PM

Tyfu Cymru and Charles Dowding Webinar Part 1: No Dig Methods and Advantages for Intensive Cropping

In the first part of this webinar Charles presents the benefits of no dig and intensive cropping with an online walk through of no dig growing covering all aspects from no dig polytunnels to planting, composting, multisowing and propagation.

6/12/2020 4:59:52 PM

Technical Advice Sheet from the Vegetable Network Power Hour

The Tyfu Cymru Vegetable Network have launched an online power hour in order to continue to support growers during the COVID-19 outbreak.

4/28/2020 4:59:01 PM