Watering is the single most important factor to make sure your Dracaena marginata survives… and thrives!
Pay attention to light levels and season to figure out if you need to water often or not.
All year long, mist water on the leaves, preferably soft water.
As a general rule, try to increase humidity in the air around the plant.
Note: all varieties have similar water needs (bicolor, kiwi…)
Dragon plants in low light and cool weather grow slowly. As a result, they need less water. With full light and warmth, on the other hand, they’ll need a lot more watering.
There are 2 techniques to water a dragon plant:
Only water when soil has turned completely dry.
To check, stick your finger down to a depth of 2-3 inches (5-8 cm). It should come out dusty and dry. If there’s even just a little moisture left, don’t water yet.
A study for Dracaena marginata has shown that the best watering schedule for dracaena is every 5 to 7 days.
Here’s a short table to show how often and how much to water Dracaena marginata:
This is especially important if your plant is potted. Potted plants don’t get any water other than that which you give them.
Also, you can adjust this to the size of your potted plant. Usually, at first, the plant isn’t so big. That’s what the amounts above refer to. Later on, as it doubles in size, you can also double the amounts you give it (but not how often: that stays the same).
A good way to water this plant is the “dunk & drip-dry” method. It only works for pots. Do this once a week in summer and twice a month in winter.
This is usually the time of the year when Dracaena marginata grows most.
Water regularly while letting the soil mix dry in the surface before watering again.
Watering must be regular but limited, in order to not suffocate the plant’s roots.
Every 3 to 7 days is largely sufficient.
More or less every two weeks during the growth phase (spring-summer-early fall), you can offer it liquid fertilizer, taking great care to moisten the soil mix beforehand.
Winter triggers dormancy in plants of the Dracaena family. The same rules as above apply, except that it may take up to a month for the soil to dry from the previous watering. Water every 15 to 30 days, no need to water weekly when the plant is in this rest phase.
But this also depends on where your dracaena is placed: if it is in full sun, its needs will surely be higher.
There’s no limit to air moisture. The higher you can get it, the happier the plant. High air moisture helps the plant keep its lower leaves for longer. In drier air, it tends to lose leaves along the lower part of the stem.
Lastly, it’s important to clean the leaves of your plant if ever the environment is dusty. It’s actually as important as fertilizing and watering, believe it or not! For example, you can move it to your bathtub or shower and hose it down occasionally.
It helps to spread a layer of houseplant mulch on top of the soil. This will help retain soil moisture, reducing the need to water by a day or more.