It’s September! Fall is almost here!  Can you believe it?

This month we are making Striped Half Square Triangle blocks and a few large Half Square Triangles. 

We’re making 7 blocks total. Four of them make up the big section in the top left corner and the other three are the large HST’s. You will need your background fabric and colors 1, 2 and 5. 

Block 1, Striped HST:                                       Block 2, HST:                              

This month you will need your background fabric and Colors 1, 2 and 5

Cutting: 

For the Striped HSTs:  

(2)  9 1/2” squares of Color 2.  

(2)  5 1/2” squares of Color 1. 

(2)  9 1/2” squares of the background fabric

(4)  1 1/4” x 9” rectangle of background fabric

For the HSTs: 

(1)  9 1/2” triangle of Color 1.  

(1)  9 1/2” triangle of Color 2. 

(1)  9 1/2” triangle of Color 5.

(3)  9 1/2” triangles of the background fabric

(see diagrams in the instructions before cutting)

Download the PDF instructions here.

We’ll start with the Striped HSTs: 

Step 1: Stack your 9 1/2” squares, (1) Color piece and (1) Background piece, right sides together.  

Step 2: Use a pen or chalk pencil to draw a line from corner to corner as a guide for your stitching. Then sew a ¼” seam on each side of your line. (This is a good spot to chain stitch again with the two squares)

Step 3: Cut along the line you drew in the previous step.

Step 4: Open the triangles and iron with seam allowances open. Do this for both halves.

Step 5: Trim the color triangle. Trim it 2 1/4“, parallel along the center line. 

Step 6: Center your long rectangle of background fabric along the edge of the Color 2 fabric. And don’t forget, chain piecing makes these 4 blocks go even faster! 

Step 7: Iron your seams open. And then trim the strip to 1” wide. 

Step 8: Cut the (2) 5 1/2“ blocks in half diagonally, for (4) Color 1 triangles. Align the corners of the two triangles and sew the small triangle along the edge of the background rectangle. 

Step 9: Iron your seam allowances open. 

Step 10: Trim your block to an 8 1/2" square, 

Step 11: Repeat steps 5 thru 10 (if you haven’t been chain piecing!). You will end up with 4 of these blocks. 

Next, we’ll do the HSTs. 

Step 1: Cut your triangles. Since we don’t need (2) HST blocks of each color, we are starting with triangles instead of squares. Cut all the triangles with the (2) equal sides measuring 9 1/2“. 

Step 2:  Sew your seam allowance along the long, diagonal edge. Chain stitch! 

Step 3: Open the triangles and iron with seam allowances open. Repeat for each block.

Step 4: Trim all the blocks to 8 1/2“ squares. 

That’s it for this month!