Growing cannabis in New Zealand is legal for personal use, but it is subject to strict regulations. Here are the basic steps to grow cannabis in New Zealand:
Step 1: Obtain the necessary permits

Before you start growing cannabis in New Zealand, you need to obtain the necessary permits from the Ministry of Health. You will also need to have a valid medical certificate if you are growing cannabis for medicinal purposes.
Step 2: Choose a suitable location

Cannabis requires a lot of light and warm temperatures, so it is best to choose a location that receives a lot of sunlight and has a warm climate. You can grow cannabis indoors, outdoors, or in a greenhouse.
Step 3: Choose the right strain

There are many different strains of cannabis, and each strain has different growing requirements. Choose a strain that is well-suited to your growing location and conditions.
Step 4: Prepare the soil or growing medium

Cannabis requires well-draining soil or a suitable growing medium. You can use a premade soil mix or create your own by mixing compost, perlite, and vermiculite.
Step 5: Plant the seeds or clones

Cannabis can be grown from either seeds or clones. Plant the seeds or clones in the soil or growing medium, and water them regularly.
Step 6: Provide the necessary nutrients

Cannabis requires a balanced supply of nutrients, including nitrogen, phosphorus, and potassium. You can use commercial fertilizers or organic options like compost or fish emulsion.
Step 7: Provide adequate water and light

Cannabis requires regular watering and a lot of light. Water the plants regularly, and make sure they receive at least 12 hours of light per day.
Step 8: Monitor the plants for pests and diseases

Cannabis plants are susceptible to pests and diseases, so it is important to monitor them regularly and take action if necessary.
Step 9: Harvest the plants

Cannabis plants are usually ready to harvest after 3-4 months of growth. Cut the plants down and dry them before using or storing.
Conclusion
Remember that growing cannabis in New Zealand is subject to strict regulations, and it is important to follow the rules to avoid legal problems.