20 gr or 1 ball size 40 crochet cotton. Steel crochet hook US size 12 (0.75mm).

Gauge: Rounds 1-3 of motif = 3/8” (1.2 cm) in diameter.

Intermediate. 16 join-as-you-go pinwheel motifs with no border.

Pattern 5, page 13 of Magic Crochet.
Called “Jardin botanico” in Ganchillo Artistico.

In Crochet Monthly, the designer is listed as Sahmelek Tutan, and the name is Botanic Garden.
In Magic Crochet and Ganchillo Artistico, the name is listed as Ozbek Mansur.