Why Do My Plants Leaves Become Crispy or Dry?
Your plant’s leaves may become dry or crispy for a variety of causes. Crispy leaves can occasionally be expected, but most of the time this indicates a problem with your plant or the growth environment.
You must act fast if you notice symptoms spreading throughout your plant. For instance, a combination of heat and light stress results in the crispy, dry leaves with yellowing, curling, and spots on this plant. Simply relocating the grow light farther away will aid in preventing the spread of the dried leaves. Be quick!
The 7 Most Common Causes of Crispy, Dry Leaves
1.) Old, light-deprived leaves are dry or crisp, which could be expected
The oldest leaves typically begin to get a touch crunchy or yellow as they get older. You probably don’t need to be concerned if your dryness issue only affects the oldest leaves that don’t receive much light any longer.
The initial few sets of leaves on your plant will typically turn yellow and die after a few sets have developed, especially if they are no longer receiving light.
2.) Light Burns in the Leaves Nearest the Light
It’s possible that the crispiness is caused by “light burn” or “heat burn” if the damaged leaves are those that are closest to your lights. The only leaves that are impacted are those that are near lights or a source of heat, so you can determine if that is the cause.
Light Burn (can happen even if the temperature is cool because the light is too close)
3.) Heat Stress Caused by Leaves Near Hot Lights
Herbal plants can still become stressed by heat, even if the grow light is placed far from them. Although some strains of herbs are more heat-sensitive than others (shorter, bushier strains are frequently more heat-sensitive than the longer, lankier variants), these plants generally prefer temperatures under 85°F / 30°C. Most plants can tolerate a few hot days without any trouble, but if it’s hot every day for several weeks, your plants may start to really suffer. The majority of Maryjane plants can tolerate brief periods of heat, but they don’t like being in arid environments. Finally, when cultivated under LED grow lights rather than grow lights that employ bulbs like HPS, LEC, or Fluorescent lights, plants are more immune to heat stress.
4.) Brown or Yellow Leaf Edges
There are a few potential causes if the dryness is accompanied by discoloured edges. It’s likely that you’re feeding your plant too many nutrients, which is why it’s beginning to exhibit nutrient burn symptoms. After increasing the total amount of nutrients, yellow or brown tips on leaves are typically the first indicators of nutrient burn.
Nutrient burn is brown and appears on the tips of leaves and causes ends to curl up
Light stress (lights being too close) can also cause yellow tips.
Yellow tips from the grow light being too close
5.) New Growth: Potentially a Nutrient or PH Issue
The final possible explanation for your plants’ crispy or dry leaves is a nutrient shortage of any kind. For instance, certain deficiencies, such as a potassium deficiency, might result in crispy leaves and discoloured leaf edges.
A potassium deficiency causes the edges of leaves to appear burned
Nutrient Deficiencies (These Were Caused by Incorrect pH)
The easiest strategy to avoid nutrient deficiencies is to provide your plants the necessary nutrients and maintain the pH level of your water at the ideal level depending on your growing medium. But more does not necessarily equal better. Avoid providing your plants with an excessive amount of nutrients.
Too Much Nitrogen (Nitrogen Toxicity) causes dark green leaves that often feel dry and crispy
How to Fix
- First, check the pH of the water going in and coming out of your plant pots.
- If you’re seeing a Magnesium or Iron deficiency, consider getting a CalmagPro or Vita Race supplement that is made for plants (you should always add Magnesium and Calcium at the same time because these two nutrients work together closely in the canna bis plant, and are important in iron uptake).
- If grow lights are on a 24/0 schedule, change to 18/6 and move the lights up a few inches. This extra night time break and slightly lower levels of light will help an ailing plant recover more quickly. Once the plant is growing fast and healthy again, you can go back to full power.
- If you don’t know what type of nutrients to use, we recommend using the Plagron line of products for hydro, coco, or soil. These products will get some of the fastest growth of any nutrients we’ve tried with herbs so far. If you want to grow with mostly organic nutrients, the Biobizz holy trinity (Grow, Bloom, Top Max) is great for your soil grow and has only and the best organic ingredients.
6.) Issues with the roots, root rot, or poor watering techniques
Even when the pH is perfect, chronically overwatering a plant, like this one cultivated in muddy soil, can occasionally result in unexpected deficits. The fact that the plant is consistently droopy is the biggest indicator that these symptoms are brought on by overwatering rather than pH (or something else).
Another example of a deficiency that’s actually caused by overwatering (notice how this seedling
7.) Bugs or Mold
If your plant gets bugs, it can cause lots of symptoms including dry, crispy leaves.
Dry, crispy, yellow leaves caused by a fungus gnat infestation
Other Possible Causes
It’s likely that some of your leaves will get burned from this incident as well if you unintentionally pour full-strength nutrient-filled water on them and don’t clean it off, either from the nutrients or from the lights being enhanced by the water.
The question, “Did anything different happen right before I started seeing problems?” is another one to consider. Was there a new supplement, a hot day, or some other change? This may occasionally point to the problem.