A rainwater tank can supply a simple greenhouse watering line, but delivery changes as the water level falls. Learn how outlet height affects available pressure, which emitters may suit, and how to carry out a flow test.
Work out storage that reflects both the rain your greenhouse roof can collect and the water plants use between showers. The guide considers changing demand through the year, dry periods and a sensible overflow route.
Build an absence plan before leaving for two weeks. Test the timer and drippers in advance, allow for likely water use while you are away, inspect vulnerable connections, use available alerts and arrange a trusted backup visitor.
Containers and planted beds do not hold moisture in the same way. See how separate pipe runs, drippers and timer programmes let each growing area follow a watering schedule that suits its root volume and crop needs.
Drip line and soaker hose systems spread water through a greenhouse bed differently. Understand how evenness, pressure, filtration and cleaning needs can shape a practical choice for your growing setup.
Hard water can leave mineral deposits that gradually reduce emitter flow. This guide covers useful water checks, signs of uneven output and maintenance based on the equipment maker’s instructions.
A soil-moisture sensor is most helpful when it represents conditions at the roots. Learn how to position and calibrate it for the growing medium, then verify readings by hand before relying on automation.
In frost-prone parts of New Zealand, trapped water can affect irrigation equipment over winter. Work through pipes, pumps, filters and tanks one at a time, following the relevant care guidance for draining and storage.
Bed depth should reflect what you plan to grow rather than a single rule. Compare crop root space and drainage needs, then follow worked examples to calculate soil volumes for sample bed sizes.
Peat-free ingredients differ in how they hold water, maintain air space and provide nutrients. Learn how those properties affect crop care and what to examine in product details and supplier information before choosing a mix.
Yearly soil replacement is not a blanket requirement. Compare signs of depleted fertility and declining structure with crop-health concerns that may call for closer investigation before removing the soil.
A no-dig system limits soil disturbance and replenishes beds from the surface. See how to prepare a permanent growing area, make ongoing organic-matter additions and manage watering where rain cannot reach.
Regular compost applications can supply more nutrients than greenhouse crops require. Learn how maturity, analysis and the bed’s existing condition can guide whether an addition is suitable instead of applying compost by routine.
A white deposit on a greenhouse bed is a clue, not a diagnosis. Compare its appearance and texture with your watering and feeding history, then test the water and growing medium to distinguish salts, minerals or surface growth.
Grow bags let you rearrange a greenhouse, but they need more planning than simply lining them up. Compare usable root volume and drainage with a permanent bed, and allow for watering, paths and support for climbing or top-heavy crops.
Under cover, mulch is protected from rain and can keep the soil surface damp for longer than expected. This guide compares material choices, their effect on moisture and airflow, and how to avoid making a hidden refuge for slugs.
Trees and shrubs growing beside a greenhouse can compete with crops well below the surface. Learn how to investigate suspected root intrusion, plan a bed edge or barrier, and avoid disturbing roots that may be vital to established plants.
The forecast reflects nearby outdoor conditions, not heat accumulating beneath greenhouse glazing. A timed temperature and humidity log helps distinguish direct sun on the sensor, sheltered site effects and inadequate ventilation.
No single shade percentage suits every crop or site. Compare crop light needs with readings from inside the greenhouse, then decide whether full or targeted coverage is the better fit for New Zealand summer conditions.
External shade blocks sunlight before it passes through the glazing; internal shade is easier to reach in some layouts. Compare heat gain, day-to-day access and fixing compatibility before choosing a position.
Fans can either move air through the crop canopy or remove warm air from the greenhouse, and those jobs are not interchangeable. See how to map an airflow route that identifies where circulation helps and where extraction is needed.
A closed automatic vent opener may be responding normally to the temperature, or it may be affected by its setting, vent load or a blockage. Follow the inspection order in the manual for your exact opener before adjusting the mechanism.
Condensation dripping onto plants often follows a repeatable overnight pattern. Use photos to map each wet spot, follow the likely path above it and compare cold surfaces with temperature and humidity records.
An unheated greenhouse can reduce exposure during a late spring frost, but it may still reach damaging temperatures. Prioritise tender plants, use temporary covers selectively and decide which pots need more sheltered conditions.
