Julie recommends a 30 wt Sulky Thread in your needle and a matching 50 wt Sulky Thread in your bobbin. Here are links to the Thread Kits and other notions you may find helpful: https://stitchesoflovequilting.com/garden-moments-sewing-machine-applique-block-of-the-month-notions/
The Garden Moments Quilt is stitched with the following Sulky Colors:
0567 Butterfly Gold
1001 White
1005 Black
1039 True Red
1045 Lt Teal
1056 Med Tawny Tan
1177 Avocado
1218 Silver Gray
1225 Pastel Pink
1253 Dk Sapphire
1256 Sweet Pink (This 50 wt color is also used as the bobbin for 30 wt 1307)
1292 Heron Blue
1307 Petal Pink (Included in the 30 wt Thread Kit only.)
1833 Pumpkin Pie