2 different parts are composing the hyacinths.
First of all, embroider the outline of the flower with French knots 2 threads and 2 wraps. Then fill the inside.
Here you can see the completed Hyacinths. Straight stitches with 2 threads are figuring the stems and the leaves.
The stems and the leaves are embroidered with DMC cotton floss 988.
The flowers are embroidered with DMC cotton floss white, 3838 and 3746