Simplify the following text for a Grade 12 native English-speaking person.
Original: The garden was established in 1544 under Cosimo I de ' Medici as the first university botanical garden in Europe , and entrusted to the famous botanist Luca Ghini of Imola .
Simplified: The garden was started in 1544 under Cosimo I de ' Medici as the first university botanical garden in Europe , and it was put under the care of the famous botanist Luca Ghini of Imola .