NZ Herald
  • Home
  • Latest news
  • Herald NOW
  • Video
  • New Zealand
  • Sport
  • World
  • Business
  • Entertainment
  • Podcasts
  • Quizzes
  • Opinion
  • Lifestyle
  • Travel
  • Viva
  • Weather

Subscriptions

  • Herald Premium
  • Viva Premium
  • The Listener
  • BusinessDesk

Sections

  • Latest news
  • New Zealand
    • All New Zealand
    • Crime
    • Politics
    • Education
    • Open Justice
    • Scam Update
  • Herald NOW
  • On The Up
  • World
    • All World
    • Australia
    • Asia
    • UK
    • United States
    • Middle East
    • Europe
    • Pacific
  • Business
    • All Business
    • MarketsSharesCurrencyCommoditiesStock TakesCrypto
    • Markets with Madison
    • Media Insider
    • Business analysis
    • Personal financeKiwiSaverInterest ratesTaxInvestment
    • EconomyInflationGDPOfficial cash rateEmployment
    • Small business
    • Business reportsMood of the BoardroomProject AucklandSustainable business and financeCapital markets reportAgribusiness reportInfrastructure reportDynamic business
    • Deloitte Top 200 Awards
    • CompaniesAged CareAgribusinessAirlinesBanking and financeConstructionEnergyFreight and logisticsHealthcareManufacturingMedia and MarketingRetailTelecommunicationsTourism
  • Opinion
    • All Opinion
    • Analysis
    • Editorials
    • Business analysis
    • Premium opinion
    • Letters to the editor
  • Politics
  • Sport
    • All Sport
    • OlympicsParalympics
    • RugbySuper RugbyNPCAll BlacksBlack FernsRugby sevensSchool rugby
    • CricketBlack CapsWhite Ferns
    • Racing
    • NetballSilver Ferns
    • LeagueWarriorsNRL
    • FootballWellington PhoenixAuckland FCAll WhitesFootball FernsEnglish Premier League
    • GolfNZ Open
    • MotorsportFormula 1
    • Boxing
    • UFC
    • BasketballNBABreakersTall BlacksTall Ferns
    • Tennis
    • Cycling
    • Athletics
    • SailingAmerica's CupSailGP
    • Rowing
  • Lifestyle
    • All Lifestyle
    • Viva - Food, fashion & beauty
    • Society Insider
    • Royals
    • Sex & relationships
    • Food & drinkRecipesRecipe collectionsRestaurant reviewsRestaurant bookings
    • Health & wellbeing
    • Fashion & beauty
    • Pets & animals
    • The Selection - Shop the trendsShop fashionShop beautyShop entertainmentShop giftsShop home & living
    • Milford's Investing Place
  • Entertainment
    • All Entertainment
    • TV
    • MoviesMovie reviews
    • MusicMusic reviews
    • BooksBook reviews
    • Culture
    • ReviewsBook reviewsMovie reviewsMusic reviewsRestaurant reviews
  • Travel
    • All Travel
    • News
    • New ZealandNorthlandAucklandWellingtonCanterburyOtago / QueenstownNelson-TasmanBest NZ beaches
    • International travelAustraliaPacific IslandsEuropeUKUSAAfricaAsia
    • Rail holidays
    • Cruise holidays
    • Ski holidays
    • Luxury travel
    • Adventure travel
  • Kāhu Māori news
  • Environment
    • All Environment
    • Our Green Future
  • Talanoa Pacific news
  • Property
    • All Property
    • Property Insider
    • Interest rates tracker
    • Residential property listings
    • Commercial property listings
  • Health
  • Technology
    • All Technology
    • AI
    • Social media
  • Rural
    • All Rural
    • Dairy farming
    • Sheep & beef farming
    • Horticulture
    • Animal health
    • Rural business
    • Rural life
    • Rural technology
    • Opinion
    • Audio & podcasts
  • Weather forecasts
    • All Weather forecasts
    • Kaitaia
    • Whangārei
    • Dargaville
    • Auckland
    • Thames
    • Tauranga
    • Hamilton
    • Whakatāne
    • Rotorua
    • Tokoroa
    • Te Kuiti
    • Taumaranui
    • Taupō
    • Gisborne
    • New Plymouth
    • Napier
    • Hastings
    • Dannevirke
    • Whanganui
    • Palmerston North
    • Levin
    • Paraparaumu
    • Masterton
    • Wellington
    • Motueka
    • Nelson
    • Blenheim
    • Westport
    • Reefton
    • Kaikōura
    • Greymouth
    • Hokitika
    • Christchurch
    • Ashburton
    • Timaru
    • Wānaka
    • Oamaru
    • Queenstown
    • Dunedin
    • Gore
    • Invercargill
  • Meet the journalists
  • Promotions & competitions
  • OneRoof property listings
  • Driven car news

Puzzles & Quizzes

  • Puzzles
    • All Puzzles
    • Sudoku
    • Code Cracker
    • Crosswords
    • Cryptic crossword
    • Wordsearch
  • Quizzes
    • All Quizzes
    • Morning quiz
    • Afternoon quiz
    • Sports quiz

Regions

  • Northland
    • All Northland
    • Far North
    • Kaitaia
    • Kerikeri
    • Kaikohe
    • Bay of Islands
    • Whangarei
    • Dargaville
    • Kaipara
    • Mangawhai
  • Auckland
  • Waikato
    • All Waikato
    • Hamilton
    • Coromandel & Hauraki
    • Matamata & Piako
    • Cambridge
    • Te Awamutu
    • Tokoroa & South Waikato
    • Taupō & Tūrangi
  • Bay of Plenty
    • All Bay of Plenty
    • Katikati
    • Tauranga
    • Mount Maunganui
    • Pāpāmoa
    • Te Puke
    • Whakatāne
  • Rotorua
  • Hawke's Bay
    • All Hawke's Bay
    • Napier
    • Hastings
    • Havelock North
    • Central Hawke's Bay
    • Wairoa
  • Taranaki
    • All Taranaki
    • Stratford
    • New Plymouth
    • Hāwera
  • Manawatū - Whanganui
    • All Manawatū - Whanganui
    • Whanganui
    • Palmerston North
    • Manawatū
    • Tararua
    • Horowhenua
  • Wellington
    • All Wellington
    • Kapiti
    • Wairarapa
    • Upper Hutt
    • Lower Hutt
  • Nelson & Tasman
    • All Nelson & Tasman
    • Motueka
    • Nelson
    • Tasman
  • Marlborough
  • West Coast
  • Canterbury
    • All Canterbury
    • Kaikōura
    • Christchurch
    • Ashburton
    • Timaru
  • Otago
    • All Otago
    • Oamaru
    • Dunedin
    • Balclutha
    • Alexandra
    • Queenstown
    • Wanaka
  • Southland
    • All Southland
    • Invercargill
    • Gore
    • Stewart Island
  • Gisborne

Media

  • Video
    • All Video
    • NZ news video
    • Herald NOW
    • Business news video
    • Politics news video
    • Sport video
    • World news video
    • Lifestyle video
    • Entertainment video
    • Travel video
    • Markets with Madison
    • Kea Kids news
  • Podcasts
    • All Podcasts
    • The Front Page
    • On the Tiles
    • Ask me Anything
    • The Little Things
  • Cartoons
  • Photo galleries
  • Today's Paper - E-editions
  • Photo sales
  • Classifieds

NZME Network

  • Advertise with NZME
  • OneRoof
  • Driven Car Guide
  • BusinessDesk
  • Newstalk ZB
  • Sunlive
  • ZM
  • The Hits
  • Coast
  • Radio Hauraki
  • The Alternative Commentary Collective
  • Gold
  • Flava
  • iHeart Radio
  • Hokonui
  • Radio Wanaka
  • iHeartCountry New Zealand
  • Restaurant Hub
  • NZME Events

SubscribeSign In
Advertisement
Advertise with NZME.
Home / Eat Well / Food News

Grow well: How to combat fungal disease in your vege patch

Grow Well with Claire Mummery as she shares her tips for fighting Fungal disease in the garden


Subscribe to listen

Access to Herald Premium articles require a Premium subscription. Subscribe now to listen.
Already a subscriber?  Sign in here

Listening to articles is free for open-access content—explore other articles or learn more about text-to-speech.
‌
Save

    Share this article

Lots of our summer plants are being affected by fungal diseases this month — these include tomatoes, potatoes, zucchini, squash, cucumbers and capsicums to name a few.

The highly-prevalent foliar diseases around at the moment are downyand powdery mildew that affect the cucumbers, squash and zucchini families. These appear on leaves and stems as a white powdery substance that spreads rapidly throughout your plants, causing leaves to curl and the overall health and production of the plant to suffer.

Powdery mildew is an airborne fungus spread by wind, rain, humidity, yellow and black ladybirds and humans. Preventing its rapid spread is the key, and good hygiene with your tools and hands is very important as it can get on your tools or gloves then spread to the next plant you touch.

Wipe your tools with methylated spirits and wash your gloves regularly. Spray plants with a good organic oil before removing the leaves as this will stick the fungus to the leaf to prevent spreading when the leaf is removed.

Advertisement
Advertise with NZME.

Downy mildew is a different fungus affecting the above plants and is again spread by airborne spores. There are many different types of this fungus and they are plant-specific — so the one attacking your cucumbers is a different species from the one attacking your brassicas. The difference between downy and powdery mildew is that downy mildew can overwinter in your soil waiting for you to plant next spring.

Make sure your plants are well fed and watered as plants that are weak will be affected more.

To make an organic homemade spray for controlling the spread of these fungi, take one tablespoon of baking soda, half a teaspoon of natural liquid soap and four litres of water and mix. Spray this mixture all over your plants — on the leaves, under the leaves and down the stem — on a weekly basis.

Blight is a fungal disease that affects tomatoes, potatoes, capsicums and eggplants. It appears as black or brown spots on the older leaves of your plants, and as they grow, round rings will develop and leaves will curl and turn yellowy-brown. Blight will kill the tissue in leaves, stems and fruit, and stunt the growth of your plant. Blight is spread by fungal spores that can be carried by the wind, insects and overhead watering.

Advertisement
Advertise with NZME.

Spray the plant with a good oil or soap spray to stick the fungus to the leaves, pull the plant out and discard, but avoid putting it in your compost.

A good way to process your diseased plants is through Bokashi fermentation which I have had great success with to control the above diseases.

Happy gardening!

Find out more about Claire Mummery's Grow Inspired Academy at Growinspiredacademy.com or follow her on Facebook @growinspiredwithclairemummery or Instagram @grow.inspired

Advertisement
Advertise with NZME.

Latest Recipes

Slow-cooking secrets: How to master flavourful meals with ease
Food News

Slow-cooking secrets: How to master flavourful meals with ease

Soba to spaghetti: Why chilled noodles are the perfect summer meal
Food News

Soba to spaghetti: Why chilled noodles are the perfect summer meal

Cold brew, hot summer: How to make the perfect iced coffee at home
Food News

Cold brew, hot summer: How to make the perfect iced coffee at home

Camping meals for a Kiwi summer
Food News

Camping meals for a Kiwi summer

The best produce to eat in January and February
Food News

The best produce to eat in January and February

Take it outside: How to eat alfresco without any fuss
Food News

Take it outside: How to eat alfresco without any fuss

Latest Food News

Why your shopping habits reveal more than you think
Food News

Why your shopping habits reveal more than you think

Premium
Why your child is a picky eater - and what parents can do about it
Food News

Why your child is a picky eater - and what parents can do about it

Slow-cooking secrets: How to master flavourful meals with ease
Food News

Slow-cooking secrets: How to master flavourful meals with ease

Is kimchi ice cream the cool new food trend?
Food News

Is kimchi ice cream the cool new food trend?

Advertisement
Advertise with NZME.

Latest from Food News

Why your shopping habits reveal more than you think
Food News

Why your shopping habits reveal more than you think

Global tastes, gut health and grab-and-go – how Kiwi pantries got their 2020s glow-up.

29 May 11:25 PM
Premium
Premium
Why your child is a picky eater - and what parents can do about it
Food News

Why your child is a picky eater - and what parents can do about it

22 May 09:35 PM
Slow-cooking secrets: How to master flavourful meals with ease
Food News

Slow-cooking secrets: How to master flavourful meals with ease

16 May 12:00 AM


Solar bat monitors uncover secrets of Auckland’s night sky
Sponsored

Solar bat monitors uncover secrets of Auckland’s night sky

06 Jul 09:47 PM
NZ Herald
  • About NZ Herald
  • Meet the journalists
  • Newsletters
  • Classifieds
  • Help & support
  • Contact us
  • House rules
  • Privacy Policy
  • Terms of use
  • Competition terms & conditions
  • Our use of AI
Subscriber Services
  • NZ Herald e-editions
  • Daily puzzles & quizzes
  • Manage your digital subscription
  • Manage your print subscription
  • Subscribe to the NZ Herald newspaper
  • Subscribe to Herald Premium
  • Gift a subscription
  • Subscriber FAQs
  • Subscription terms & conditions
  • Promotions and subscriber benefits
NZME Network
  • The New Zealand Herald
  • The Northland Age
  • The Northern Advocate
  • Waikato Herald
  • Bay of Plenty Times
  • Rotorua Daily Post
  • Hawke's Bay Today
  • Whanganui Chronicle
  • Viva
  • NZ Listener
  • Newstalk ZB
  • BusinessDesk
  • OneRoof
  • Driven Car Guide
  • iHeart Radio
  • Restaurant Hub
NZME
  • About NZME
  • NZME careers
  • Advertise with NZME
  • Digital self-service advertising
  • Book your classified ad
  • Photo sales
  • NZME Events
  • © Copyright 2025 NZME Publishing Limited
TOP