Fertiliser and Plant Nutrition

Shop Plant Fertiliser & Nutrition Online at Kings Seeds

Growing healthy plants doesn’t need to be complicated, the right nutrition at the right time makes all the difference. Our collection brings together simple options for home gardens, pots and large spaces. Browse plant fertiliser and nutrition for vegetables, flowers, soil health and more. Find a range of different plant feed and garden nutrition options to suit your garden space, including natural options such as wool-based soil enhancer plus SeaWool seaweed pellets, along with certified-organic concentrates and sprays. Kings Seeds is a 100% NZ-owned family business with over 40 years of supplying quality seeds, gardening essentials and growing advice. Find the right plant feed and garden nutrition for your gardening needs and shop online at Kings Seeds. 

When should you use fertiliser and plant food?

Timing depends on growth, weather, plant type and soil conditions. You should generally use fertiliser when your plants, vegetables or flowers are actively growing. Depending on the variety you are growing, this may vary by month. Across New Zealand, most gardeners see the strongest response in spring and early autumn. Ideally, use plant feed and nutrition after you have planted your chosen vegetable or flower in soil, but be sure to cross-reference the plant type and the fertiliser you are using for specific application use. 

What is the best fertiliser to put on a garden?

The best garden nutrition depends on what you grow, plus what the soil might be lacking. Understanding your crops' needs is a good place to start. Vegetable plants often respond well to a controlled-release product that covers nitrogen for leafy growth, phosphorus for root development and potassium for flowering plus fruit set. For flower beds and blooms, specific flower-focused formulas are more beneficial to help with bud production while supporting foliage health. Wool-based soil enhancers suit gardeners wanting slow nutrient release plus improved structure, which can help moisture holding in summer dry spells. If you want a gentle, organic-style boost, seaweed products can support resilience and root activity.  Choose your fertiliser by matching the product's purpose to your planting needs. 

Can I just sprinkle fertiliser on top of the soil?

Sprinkling works sometimes, though results improve when the plant and soil nutrition can meet the root and effectively carry over nutrients. Fertiliser granules left on dry surfaces can sit inactive, wash into one patch, or burn nearby stems once rain arrives suddenly, so careful placement matters. For garden beds, lightly rake garden nutrition and plant feed into the top few centimetres, then water well so the feed moves toward the roots. Pots benefit from mixing controlled-release fertiliser through fresh potting mix, or pressing tablets beneath the surface level so watering activates gradual release. For wool pellets or wool soil enhancer, incorporate into the soil before planting, where possible. To successfully use your chosen plant feed, be sure to follow the product description and label’s instructions for proper use.

What types of fertilisers are there for the garden?

There is a range of different fertilisers and garden nutrition options available for the garden and different crop needs. Gardens can use fast-acting feeds, slow-release formulas, soil improvers and concentrated formulas, each suiting different gardening goals. Quick feeds give a rapid response for leafy greens or hungry seedlings, yet careful dosing reduces runoff and soft growth. Controlled-release granules deliver nutrients over weeks, handy for busy households and consistent results across mixed beds. Tablets can also be used as a slow-releasing formula and work well in houseplants and containers with specifically measured fertiliser doses. Soil enhancers such as wool-based products add organic matter plus slow nutrient supply, helping structure and moisture retention for the crop. Seaweed fertiliser products, including concentrates, support plant health, protection and recovery from stress conditions. Understanding what your garden and crops need is the key to choosing the right fertiliser for your garden from the range of options available at Kings Seeds.