
Your Kitchen Garden - Tomatoes
08 Sep, 2025
Growing From Seed
If you want to explore unique varieties of tomatoes, growing from seed is a great option! Auckland's warm climate allows for seed sowing from mid August, starting in seed trays.
Growing From Seedlings
For a quicker start, try tomato seedlings! Our Super Punnets have individual pockets which ensure their roots won’t get tangled, setting your tomatoes up for fast growth.
Growing From Established Plants
Need a headstart, or playing catch up? Available from mid September, mature plants establish quickly, producing a bountiful harvest to get you snacking on them sooner.
Growing from Grafted Tomatoes
Wanting double the tomatoes? Grafted tomatoes are a great option as they grow faster, are more resilient, and can produce up to twice as much fruit as standard varieties.
Position
Tomatoes need as much sun as possible! Find a warm sunny spot in your garden that gets at least 6-8 hours of sun a day, preferably somewhere sheltered from strong winds but with good airflow. Make sure to rotate your crop placement each year, avoiding areas where tomatoes, potatoes or eggplants grew the previous year to avoid soil-borne diseases.
Planting In Containers
When planting into containers, make sure to use a specialised Tui Tomato Mix or Living Earth Organic Veggie Mix as these mixes have water crystals for improved moisture retention, as well as slow-release fertiliser to help feed your plants. Make sure to choose your pot wisely to ensure healthy root development, at least a 40L pot for a mature plant.
In Ground
When planting tomatoes directly into the ground, make sure your soil is free draining and rich in organic matter. To improve the organic content in your soil use a fork to break up the soil and mix in Kings Compost and Kings Sheep Pellets. Dig a hole twice as deep and wide as the pot your plant came in. Place the plant in the hole, ensuring that the graft is at least 1 cm above the soil line, backfill the hole with your soil blend. Firm the soil down gently and water in well with Aquaticus Organic Garden Booster. Provide a stake to tie your tomato plants to as they grow. Some tomato varieties can reach up to 6ft tall!
Care
Watering
Tomatoes thrive with consistent watering and the right nutrients. If planted in the ground, water deeply every second day to encourage strong root development. For potted tomatoes, water daily until it drains from the bottom of the pot - but never let the pot sit in standing water, as this can lead to root rot.
Feeding
Feeding is just as important. Once your tomato plant begins to flower, apply Kings Liquid Tomato Food every two weeks. This tomato specific fertiliser is rich in potassium (or potash), which promotes abundant flowering and fruit production. Supplement with Aquaticus Garden Booster once a month, this organic liquid fertiliser will help your plant develop stronger, healthier roots!
Pruning
To help your tomato plant focus its energy on producing fruit and flowers, regularly remove side shoots - also known as lateral branches. These small shoots appear in the junction between the main stem and existing branches and can divert valuable nutrients from fruit development. Harvest your tomatoes once they’ve fully ripened on the vine. Depending on the variety, they’ll turn a rich red, golden yellow, or vibrant orange when ready to pick.
Pest Prevention
Keep your tomato plants healthy by staying ahead of common pests and diseases. To combat blight, spray regularly with Grosafe Free Flo Copper, and use Yates Nature’s Way Fungus Spray to control powdery mildew. For protection against insect pests, apply Yates Success Ultra. Whatever product you choose, always read and follow the label instructions carefully to ensure safe and effective use. It's best to apply sprays in the evening hours to avoid harming beneficial insects.