Watering Timing

Da, wo ich herkomme, und was ich so Internet gelesen hab, gießt man am Abend. Wenn es abkühlt, können sie sich mit Wassser und Nährstoffen regenerieren vom heißen Sommertag. Du musst dir keine Sorgen machen wegen der Nässe in der Nacht, draussen ist Luftzirkulation wenn sie freistehen. Ich geh hier vom Hochsommer aus, würdest du nur in der Früh gießen, würde alles verdampfen tagsüber, und sie hätten in der Nacht nichts zum erholen. So hast du in der kühlen Nacht was, wo es nicht so schnell verdampft und den Anfang des Tages. Aber bei 30 Grad Schatten/40 Grad Sonne gießt man sowieso nicht nur einmal, aber da würd ich auch ein schattigares Plätzchen vorschlagen.

Generally, watering at sunrise is best - it maximizes water uptake for the day, reduces evaporation thanks to cooler morning temperatures, and gives the top layer of soil time to dry out before sunset. This helps prevent elevated nighttime humidity, which can invite issues, especially during flowering.

The plant nutrient nitrogen exists in forms with both positive and negative charges. Ammonium (NH4+)(immobile in soil)(Cation) has a positive charge, while nitrate (NO3-) (highly mobile in soil)(Anion)has a negative charge. Nitrogen is unique among plant nutrients in that it can exist in both positively charged (ammonium, NH₄⁺) and negatively charged (nitrate, NO₃⁻) forms in the soil. This makes it a special nutrient. In that it is responsible for providing balance for reactionary trade offs when it comes to ph. Because ph itself in the medium will always slowly drift towards acidicity, such is nature. 80% of nitrogen should be nitrate and no more than 20% ammoniacal nitrogen. Ca, mg, and K are the big 3 cations related to soil composition, pH & base saturation. When nitrogen is in the form of ammonium, it can compete with calcium, magnesium, and potassium for absorption sites in the plant root. This competition can lead to a reduction in the uptake of these other essential nutrients. Nitrogen, particularly in its nitrate form (NO3-), can increase soil acidity, which can also affect the availability of calcium, magnesium, and potassium. The form of nitrogen applied (ammonium vs. nitrate) can influence its interactions with other nutrients. Ammonium nitrogen can have a more pronounced negative effect on the uptake of calcium, magnesium, and potassium compared to nitrate nitrogen. Common forms of ammonium nitrogen include ammonium ion (NH4+), urea, and ammonium compounds like ammonium nitrate, ammonium sulfate, and ammonium phosphate. Common forms of nitrate nitrogen include potassium nitrate (KNO3), sodium nitrate (NaNO3), calcium nitrate (Ca(NO3)2), and ammonium nitrate (NH4NO3). Phosphorus is an essential plant nutrient, and its availability in the soil is strongly linked to the presence of oxygen. Plants primarily absorb phosphorus as phosphate (PO4), and oxygen is a key component of this molecule. Furthermore, the availability of phosphorus in the soil can be impacted by factors like soil aeration and temperature, which in turn affect the oxygen supply to the roots. Phosphorus uptake in plants is most critical during the early stages of growth, particularly within the first few weeks of plant development. Young plants actively growing tissues have a high demand for phosphorus. They may absorb up to 75% of their total phosphorus requirements within the first few weeks of growth. With upto 51% of uptake happening overnight primarily in first few hours or early nightfall. Never beneficial to water a medium at night. If your looming to optimize the process, root respiration can't happen at any other time, so no matter how much you want to water, any reduction to oxygen levels will negatively effect growth. Unless the medium was bone dry then you absolutely could and should. This is not up for debate. Saturation of rootzones does not assist in root respiration. No matter howuch you want it to. If oxygen is depleted in the soil and reaches the roots, root respiration transitions from aerobic to anaerobic, significantly reducing energy production and potentially harming the plant. Anaerobic respiration yields less ATP compared to aerobic respiration.

As a general rule – whether indoors or outdoors – it’s best to water your plants within the first two to three hours after sunrise. During this time, the plant can absorb and make use of the water more efficiently throughout the day. If you water in the evening instead, the soil often stays wet for too long overnight. This can prevent the plant from properly using the water and also increases the risk of mold or fungal diseases. So my advice is: always water in the morning – ideally shortly after sunrise!

WHEN GROWING IN POTS SUPERIOR IS 2-3 HRS AFTER SUNRISE!!!! THIS IS VERY VERY GOOD!!! NO NEED TO WATER BEFORE SLEEP TIME!!!! IF MEDIUM DRY BACKS TO MUCH DURING THE DAY YOU CAN WATER AGAIN!!!!! LAST WATERING SHOULD BE NO LATER THAN 3HRS BEFORE SLEEP TIME!!!!! WATERING BEFORE SLEEP TIME CAN PROMOTE ROOT ISSUES!!!!!! DAT IS VERY VERY BAD!!!! WANT PLANTS TO TRANSPIRE THEN FEED!!!! VERY VERY GOOD!!!!!!

Personally, I water them at sunrise (or in the morning) as this is my routine. Feels better. Plants wake up as I do and they need some breakfast^^

Either, it really does not matter. Mornings are good, but I don't like to send my girls to bed dry as well........... Whichever fits in with YOUR schedule will be fine..........they are plants, they are not humans and won't hold any grudges!

In nature you don't get to pick, so there is nothing saying you can't do whatever. Indoors you can optimize the process, the function is the same, benefits too. Ideally you setup a water once or every other day In mornings. Transpiration by day pulls water from pot through roots and out leaf. At night root respiration is one of your major processes that occur. It's highly dependant on having optimal amounts oxygen. Not too dry but not too wet. Microorganisms love it moist too. It's often though that most nutrient uptake is done during day but that's not accurate, studies show up to 51% of nutes can uptake overnight especially early hours of nightfall. When night comes you want it as optimal as possible for processes to occur. There is no right or wrong, but cannabis is a creature of habit the better you can schedule everything down to a science the better she will flow. In turn leading to rapid growth.

If waiting for proper dryback results in an evening irrigation (or any other personal life related scheduling), no big deal, but in general better to water in the morning. I'd rather water in the evening than worry about possible wilt by the time i get to the plants the next day. The plant takes in very little water at night. The stomata are shut. Transpiration nearly ceases at night. So, maximizing water that mostly stagnates overnight isn't optimal. If it happens once in a while it isn't going to cause a problem, but if you do it all the time i bet it increases probability of rootzone issues.

Hey 👋 Ich gieße am Morgen um zu vermeiden, dass sie in der Sonne austrocknen.

For making sure it has water when it might be harmful to not have water...morning. For mitigating pest/pathogen issues when they are most risky...morning. Unless your climate is atypical or you think you might be in a super-specific circumstance, morning.