No matter whether it is indoor plants or outdoor plants: You should always avoid stress in plants. You can read here how it works.Plants can also suffer from stress
You should definitely avoid stress with your plants so that they develop splendidly and delight you again and again every year with a lush bloom. Moving flower pots, for example, is an enormous stress factor, which then only has to get used to their new surroundings. Or transplanting, which cannot always be avoided, can mean stress for the plants. In this context, the traditional saying applies You don't transplant an old tree!, Very old trees in particular should therefore remain at their original location for as long as possible.
Signs of stress
The plant can only show stress factors that act on it through visual changes, which can of course also occur due to deficiency symptoms. Why the true stress factors are always very difficult to identify.
In principle, however, all plants also have a certain stress tolerance, which means that they can even withstand short-term dry periods or cold influences almost without damage. Especially if in return they are provided with sufficient nutrients. However, they should never be exposed to extreme stressful situations for a long period of time so that they do not have to indicate a stress reaction in the first place.
By the way:
Stress in plants also led to the fact that more and more stress-resistant plants (more resistant, undemanding, etc.) are offered for sale in gardening stores. In some cases, however, these are unfortunately also genetically modified plants.
What are typical stress factors?
A basic distinction is made between avoidable stress factors and combatable stress factors. Both types are presented here in more detail.
»Avoidable stress factors:
Of course, the absolutely avoidable stress factors for plants include drafts, excessive sun exposure (leaf fire / sunburn in plants), excessive irrigation, excessive drying and extreme cold temperatures. But also uncontrolled pruning (e.g. on woody plants), unnecessary repositioning and transplanting as well as light frequencies that are too low (daylight or sunlight) count.
Before purchasing a plant, you should ensure that it is optimally located in a perfect environment.
»Controllable stress factors:
The controllable stress factors for plants naturally include bacterial and pest attacks of all kinds, but also pollutant-rich soils, adverse environmental influences (e.g. acid rain) and the like.
In this context, coping with stress on an ecological basis is ideal, but unfortunately this does not always lead to the desired success. Which is why in exceptional cases you will certainly have to resort to chemical-based aids.
If the individual plants are offered sufficient nutrients (e.g. in the form of biological fertilizers), this can also reduce stress.