This popular springtime flower can actually be toxic if ingested in large quantities and can be particularly harmful to cats, dogs and horses. The bulb of the tulip contains glycosides and alkaloids that can cause nausea, dizziness and abdominal pain. Severe poisoning can lead to convulsions and possibly death.
What is the effect of vinegar on plants? A: Vinegar is an acidic solution that removes the waxy coating on a plant's foliage, leaving it vulnerable to drying out. Low concentrations of vinegar burn only the foliage, leaving the roots alone to regenerate when possible. Stronger concentrations can burn the plant all the way to the roots. Continue Reading.
The reason for this actually has to do with the soil, not the water. Different types of plants do best at different soil pH's. Soil pH tells you how much acid there is in the soil. The more acid there is, the lower the pH will be. Since vinegar contains a lot of acid, adding vinegar will lower the soil pH. So if the plants ideal pH is less than what the soil currently has, adding vinegar will probably do it a lot of good. In particular, if the dirt youre using contains a lot of limestone (a fairly common problem for farmers), the pH will normally be very high (not much acid).