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How to Grow Purple Weed

Want to grow a purple weed plant? In this blog we tell you how to grow purple weed indoors or outdoors! Check it out! Last updated 06/12/2022

    If you enjoy growing cannabis, you might be tempted to grow a fantastic purple weed plant, whether to impress your friends or as an experiment. Read our essential guide to growing purple marijuana!

    For some cannabis growers, growing beautiful purple marijuana is simply an enjoyable thing to do but its appearance matters less than the flavour. However, sometimes it's nice to try something new or take on a challenge. People often grow purple weed to show their breeding skills to their marijuana friends, and some believe the colour positively affects the quality of the cannabis. Weed with an appealing colour never fails to attract attention in your grow room. 

    Want to know how to grow purple weed and which steps to take? Keep on reading! 

    Is purple weed better than green?

    The short answer is 'no'. If a seller of purple weed claims it's more powerful and better than normal cannabis, he or she is either lying or doesn't know much about growing cannabis. The next time you pop into a coffee shop, pay close attention when asking why purple marijuana is so much more expensive. In reality, it is sometimes significantly weaker than the same strain in green.

    Why plants are usually green?

    Most plants use a pigment called chlorophyll to convert light into energy for growth. However, there isn't a specific destination for a green wavelength in the light spectrum. Chlorophyll appears green because it is able to absorb all colours but happens to reflect green, which is the reason why most vegetation is green.

    However, you might be surprised to learn that green chlorophyll is not the sole pigment that plants use to make energy from sunlight. There is an additional pigment, known as anthocyanin, which is a purple pigment.

    Why is some weed purple?

    The interesting thing is that the purple section of the light spectrum contains the most energy. When your plant is purple for whatever reason it reflects this high-energy light instead of utilising it. This means that the plant does not use the light fully and optimally. It also means that your cannabis plant will not grow to its maximum potential. As a result, it may ultimately be less powerful than a green variety.

    Some types of purple cannabis are stronger than others

    Not all purple cannabis strains are weaker than green ones. Some species that grow purple flowers, such as Granddaddy Purple or Pinkman Goo, are grown to contain a lot of cannabinoids. This makes them incredibly powerful, despite their hue. In other words, potency depends on genetics.

    Ways to cultivate a purple weed plant

    There are two ways of growing purple weed. You can choose a special species, such as Purple Kush, which turns purple by itself or you can let normal weed, which is usually green, turn purple. We'll explain how you can turn regular cannabis strains into purple cannabis.

    How to prepare your purple cannabis?

    If you are keen to grow purple plants, you don't have to do anything special at the start. Simply start with seeds or cuttings in the usual way. Put the seeds in a seed pot or in the pot in which you want to leave them. Allow your plants to germinate and grow as usual. The purple colour comes later when your cannabis plants start to flower.

    When your plants are mature and show the first signs of flowering, you can start the process that will turn them into purple beauties. The main thing is to perform a simple but effective action: lowering the night temperature for your flowering plants. Cannabis plants turn purple when they experience chilly nights! As a rule, your plants turn purple if the difference between the day and night temperatures is around 15 ° C or more. However, make sure that the temperature is not too low because that will hinder the maturing process.

    The mechanism that causes your cannabis plants to turn purple is the same that causes the trees to change colour in the autumn. Another explanation is that the lower temperatures cause the plants to produce less chlorophyll. However, they produce more purple (or red or brownish) anthocyanins.

    It may not always be possible to lower the night temperature for your plants in such a way that they turn purple. Growers often start growing outside late in the spring and continue in the summer when the nights are never cold enough to make the plants turn purple. They are ready for harvesting at the beginning of autumn before the nights get cold.

    If you grow indoors in a tent, it is possible to grow strains in the autumn photoperiod. You will then be able to control the vegetative and flowering phase of your plants by changing the light cycle. If you plan the grow schedule, then the night temperatures will hopefully be low enough to colour your cannabis purple. If it doesn't get sufficiently cold in your grow room at night, you could try and lower the temperature with air conditioning. But what should you do if you want to grow purple weed plants in the open air?

    Tips for a magnificent purple harvest grown outside

    It is not possible to start outside with a photoperiod type when it is autumn or winter. This is mainly because there are fewer hours of daylight which confuses the growth phase of your plants rather than the lower temperatures.

    Choose to grow your plants indoors and put them outside when they have reached a good height. They should bloom at the end of autumn or the beginning of winter when the days are shorter. This is assuming that it is not too cold and that it is not going to freeze. If there is a cold spell, bring your plants indoors quickly!

    Autoflowers for beautiful purple 'winter weed'

    In some climates, such as southern Europe, it is possible to grow outside in the winter. The temperatures are pleasantly warm in the daytime and, while the nights are a bit chilly, there is no risk of frost. The perfect conditions for growing purple marijuana!

    If you want to grow a nice stock of beautiful purple buds outside, choose autoflowering strains. Autoflowers are perfect for autumn, winter, and the early spring. The amount of daylight is then too little for growing and flowering photoperiod cannabis plants. Autoflowers can be planted 'in-between seasons' so that you can harvest beautiful crops of purple winter weed. At the end of spring, you can then grow the photoperiod of cannabis strains.

    Whether you grow strains that turn purple by themselves or transform normal cannabis plants into purple beauties; growing purple marijuana is very interesting and enjoyable. Use this guide to show off your horticultural skills and amaze your friends with your beautiful purple tops!