Plant Care Guide

Welcome to the Pikirangi Plant Care Guide — your go-to resource for keeping your plants healthy and thriving. Whether you've just received a new tree, a tropical beauty, or a classic ornamental, you'll find practical care advice below tailored to our most popular plant categories.

Jump to a section:

Trees (Fruit Trees & Ornamental Trees)
Tropical Plants
Ornamental Plants
Citrus Trees
NZ Native Plants
General Planting Tips
Overwintering Your Plants

🌳 Trees – Fruit Trees & Ornamental Trees

Trees are a long-term investment in your garden. Getting the establishment right makes all the difference.

Planting

Choose a spot with good drainage — most trees dislike sitting in waterlogged soil.
Dig a hole twice as wide as the root ball and the same depth. Avoid planting too deep.
Backfill with a mix of your native soil and quality compost. Firm gently to remove air pockets.
Stake young trees for the first 1–2 years to protect against wind rock.
Apply a 5–10 cm layer of mulch around the base, keeping it clear of the trunk.

Watering

Newly planted trees: Water deeply 2–3 times per week for the first 4–6 weeks, then reduce to once a week as roots establish.
Established trees: Water deeply but infrequently — once every 1–2 weeks in dry periods. Deep watering encourages deep root growth.
Avoid light, frequent watering which promotes shallow roots.

Pruning

Prune fruit trees in late winter (July–August in NZ) while dormant to shape the canopy and improve airflow.
Remove dead, diseased, or crossing branches first.
For ornamental trees, light shaping can be done after flowering.
Always use clean, sharp tools and seal large cuts with pruning paste.

Feeding

Apply a balanced slow-release fertiliser in spring as new growth begins.
Fruit trees benefit from a potassium-rich feed in summer to support fruiting.

🌺 Tropical Plants

Tropicals bring bold colour and lush texture to NZ gardens. They thrive with warmth, humidity, and shelter from cold winds.

Planting

Plant in a warm, sheltered position — north or west-facing spots are ideal.
Tropicals love rich, free-draining soil. Amend with compost and pumice if your soil is heavy.
In cooler NZ regions, consider growing tropicals in containers so they can be moved indoors over winter.

Watering

Keep soil consistently moist during the growing season (spring–autumn), but never waterlogged.
Reduce watering significantly in winter — most tropicals are semi-dormant and susceptible to root rot in cold, wet conditions.
Misting foliage in dry, hot weather helps maintain humidity.

Pruning

Remove spent flowers and dead foliage regularly to encourage new growth.
Hard pruning (if needed) is best done in early spring before the growing season begins.
Avoid pruning in autumn — this can stimulate tender new growth that is vulnerable to frost.

Feeding

Feed with a liquid fertiliser every 2–4 weeks during the growing season.
A fertiliser higher in potassium (K) will promote flowering.

🌸 Ornamental Plants

Ornamentals are the backbone of a beautiful garden. Most are low-maintenance once established.

Planting

Check the plant label for sun/shade requirements before choosing a position.
Prepare soil well with compost. Most ornamentals prefer well-drained, fertile soil.
Plant at the same depth as the nursery pot — avoid burying the crown.
Water in well after planting with a seaweed solution to reduce transplant stress.

Watering

Water regularly for the first growing season until established.
Once established, most ornamentals are reasonably drought-tolerant — water during prolonged dry spells.
Water at the base of the plant, not over the foliage, to reduce disease risk.

Pruning

Deadhead spent flowers to prolong blooming and keep plants tidy.
Cut back perennials to the ground in late autumn or early spring.
Shrubs can be lightly shaped after flowering — avoid cutting into old wood on plants like rhododendrons.

Feeding

Apply a slow-release fertiliser in spring. Flowering plants benefit from a bloom-boosting feed in bud.

🍋 Citrus Trees

Citrus are among the most rewarding fruiting plants for NZ gardens — with the right care, they'll produce abundantly for decades.

Planting

Plant in the warmest, sunniest spot available — citrus need at least 6 hours of direct sun daily.
Excellent drainage is essential. Raised beds or mounded planting work well in heavier soils.
In cooler regions (south of Hamilton), grow in large containers and bring indoors over winter.

Watering

Water deeply once or twice a week in summer. Allow the top 5 cm of soil to dry out between waterings.
Inconsistent watering can cause fruit drop and splitting — aim for regularity.
Reduce watering in winter but don't let the plant completely dry out.

Pruning

Minimal pruning needed — remove dead wood and any shoots growing from below the graft union (rootstock shoots).
Light shaping can be done in spring after the risk of frost has passed.

Feeding

Citrus are heavy feeders. Use a dedicated citrus fertiliser in spring, summer, and autumn.
Watch for yellowing leaves — this often indicates a nitrogen or magnesium deficiency. A foliar spray of Epsom salts (magnesium sulphate) can help.

🌿 NZ Native Plants

NZ natives are perfectly adapted to our climate and soils, making them excellent low-maintenance choices for sustainable gardens.

Planting

Plant in autumn or early spring when conditions are mild and rainfall is more reliable.
Most natives prefer free-draining soil and do not need rich compost — avoid over-fertilising.
Mulch well to retain moisture and suppress weeds, especially in the first year.

Watering

Water regularly for the first summer after planting — this is the critical establishment period.
Once established (usually after 1–2 seasons), most NZ natives are highly drought-tolerant and need little supplemental watering.

Pruning

Many natives require little to no pruning. Light tidying after flowering is usually sufficient.
Flaxes (harakeke) can have old or damaged leaves removed at the base — never cut the central shoot.
Coprosmas and hebes can be lightly trimmed to maintain shape.

Feeding

Generally not required once established. If needed, use a low-phosphorus native plant fertiliser — high phosphorus can harm some natives.

🌱 General Planting Tips

Timing: Autumn and spring are the best planting seasons in NZ. Avoid planting in the heat of summer or during frost periods.
Soil preparation: Good soil is the foundation of a healthy garden. Incorporate compost before planting and top-dress annually.
Mulching: A 5–10 cm layer of mulch conserves moisture, regulates soil temperature, and suppresses weeds. Keep mulch away from plant stems.
Watering in: Always water plants thoroughly immediately after planting, even if rain is forecast. A seaweed solution helps reduce transplant shock.
Spacing: Give plants room to grow — overcrowding leads to poor airflow and increased disease pressure.

❄️ Overwintering Your Plants

NZ winters vary greatly by region. Here's how to protect your plants through the colder months.

Frost-tender plants: Move container plants indoors or into a glasshouse before the first frost. Cover in-ground plants with frost cloth on cold nights.
Tropicals: Reduce watering and stop feeding from late autumn. Mulch heavily around the base to insulate roots.
Citrus: In frost-prone areas, wrap the trunk with hessian or frost cloth and cover the canopy on frosty nights.
Deciduous trees: Winter is the ideal time to prune while dormant. Apply a copper spray to prevent fungal disease.
Perennials: Cut back spent growth and mulch the crown to protect from frost.

Have a question not covered here? Visit our FAQ page or get in touch — we're always happy to help you find the right plant and care advice for your garden.