Titania tells Oberon that his petty jealousy of the Indian boy and their awful fight has basically turned the world upside down, wreaking havoc.
She tells Oberon that he is responsible for making the wind bring a plague upon the land in the form of "contagious," or infectious frogs from the ocean (II.i.90). She also declares that the plague of frogs has overflowed the rivers, making them flood every continent. Furthermore, the floods, of course, have ruined the crops. The flooding has wreaked further havoc by starving all the livestock because, of course, their grass is dead and drowned in water.
Finally, she argues that their fighting has turned the seasons upside down. "Ice-cold frosts" are forming in spring time, at the same time that flowers are blooming. The frost is covering the roses and "sweet summer buds" (111). Finally, she portrays the mix-up of the seasons and the confused state of the human beings by declaring:
The spring, the summer,
The childing autumn, angry winter, change
Their wonted liveries; and the mazed world,
By their increase, now knows not which is which. (112-115)
Hence, we see that Titania blames Oberon's jealousy and their ridiculous fight for a great deal of destruction in the world.
Therefore the moon, the governess of floods,
Pale in her anger, washes all the air,
That rheumatic diseases do abound. (2.1.88-90)