In general, houseplants' potting soil should be kept moist, but not wet. They normally need watering once or twice a week in the spring and summer, but less in the autumn and winter. However, depending on the type of houseplant, this is not always the case.
2) The tips of the leaves turn brown
If the tip of the leaf is turning brown this is a sign of overwatering. Too little water will result in your plant's leaves feeling dry and crispy to the touch while too much water results in soft and limp leaves.
Best Plants to Top Water
If you have a plant with shallow roots, top watering will be the best way to water the roots. Plants like epiphytes, succulents, Snake plants, Calathea, Aloe, more mature Maranta, Sedums, Kalanchoe, Begonias, African violets, and Pothos have shallow roots.
Examples of some plants that don't appreciate misting are succulents and other drought-resistant plants like Aloe Vera and Jade Plants, as well as any plants that have fuzzy or hairy leaves, as it is easy to cause these kinds of leaves to rot if they get too wet.
Thus, xerophytes are plants that are capable of growing in dry conditions.
In general, you should water your spider plants about once a week. Before watering, check the soil of the plants to see if it's dry. If it's still moist, you should wait another day or two and repeat this until the soil is dry. The plant might be thirsty, but it does like the soil to dry out every once in a while.
Water. Your Snake Plant only needs to be watered fortnightly, allowing its soil to completely dry out between waterings to prevent overwatering and root rot. During the winter months feel free to only water your snake plant once a month if the soil is still moist after 2 weeks.
The most important rule for watering succulents is this: Only water when the soil in the succulents' growing container is bone dry. We repeat, let the soil dry out completely between waterings. If the soil isn't crumbly, dry dirt, don't water it. See, most houseplants want their soil moist at all times.
The tiny aquatic plant Wolffia, also known as duckweed, is the fastest-growing plant known.
Devil's ivy, aloe vera, spider plants, rubber plants, lucky bamboo and peace lilies will all take to water very well and will look great as a mini art installation. These plants are sure to love growing in water, just as much as they love growing in soil. Devil's ivy will thrive in water.
Underwatering is one cause of why your houseplants may be exhibiting dry and crispy leaves. Often times, if you let your houseplant's soil get bone dry, especially for extended periods, the lower leaves will typically turn brown and crispy. Either just the edges, or even the whole leaf.
Not enough water
If a plant gets thirsty, its leaves get dry. If your plant is looking crispy all over, it probably needs a drink. To be sure, put a finger in the soil. If it's dry to a depth of two inches it's definitely time for water.
Misting houseplants is a very simple and effective way to boost humidity. "Misting is also an easy solution to the risk of overwatering your plants," he adds, instructing to, "pay attention to the color and texture of the leaves on your plant. Plants with brown or dry leaf tips will benefit from regular misting."
Even on regular plants, the act of misting can help dislodge dust and dirt to keep the plant leaves clean, boosting not just their appearance but their efficiency as living, breathing solar panels.
Misting is highly recommended at least once a month, and more often with species that enjoy it (see full list below). Be sure to spray the top and underside of your leaves, and if using for cleaning your leaves, wipe the leaves down with a cloth after misting to remove dust.
Bottom watering is also beneficial for your plant's roots because it encourages them to grow downward toward the water source instead of outward or around in a circle to become root- wrapped. This makes for longer, stronger roots that support the plant well and readily absorb nutrients and water.
If a plant is overwatered, it will likely develop yellow or brown limp, droopy leaves as opposed to dry, crispy leaves (which are a sign of too little water). Wilting leaves combined with wet soil usually mean that root rot has set in and the roots can no longer absorb water.
One of the easiest indoor plants to grow, Chlorophytum comosum, commonly known as spider plant, ribbon plant or airplane plant, can easily be grown in water.