Can water flowers but milk can not be used directly for watering flowers , because the rich substances in milk will release lactic acid, which will change the nature of the soil, increase the acidity of the soil. In its fermentation will produce some odor fermentation exothermic, if watered too much, the potting soil can not absorb, it is easy to burn the roots, but also invites pests, invites a large number of harmful germs.

When using expired milk as fertilizer, ferment it first. Generally, if conditions permit, open and place the opened milk in a clean container, place it between 30-35 degrees, and ferment it successfully over a period of 2-3 days. Adding a few drops of yogurt during the fermentation process will help speed up the fermentation. At this stage, when temperatures are low, vegetable growers can extend the fermentation time as appropriate.

Open the expired milk and place it in a clean container. In the shed for a week or so, it can ferment naturally, and the fermented milk smells sour. Then use water, its ratio to water is 1:20. if the milk already has a noticeable sour rotting odor, you can use it to water your flowers. If the expired milk already has a noticeable sour rotting odor, you can use it to water flowers at this point. You can dig a small pit in the middle of the flower soil and bury the milk in it so that it won't have an unpleasant odor.

It should be noted that the milk should not be too much, and it can only be used a second time in a month or so. General culture in the outdoor large flowers can be used, there will be no effect, but like culture in the indoor small potted flowers, it is best not to use, especially those aquatic flowers, because aquatic flowers for the breeding of water requirements are higher, need clean water, so the expired milk can not be used.