St. Paddy's Field Quilt Along - Step 1 The HST Units

✂️ Half Square Triangle Unit for St. Paddy's Field Quilt Along 

4.5" Finished (5" Unfinished)

Method: 2-at-a-Time HST   PDF Instructions

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🔢 Quilt Requirement

You will need:

64 finished Half Square Triangle (HST) blocks

Each pair of 5" squares yields 2 HST units.

64 ÷ 2 = 32 pairs needed

✂️ Cutting Instructions

• Cut 32 green 5" × 5" squares
• Cut 32 background 5" × 5" squares

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✨ Additional Supplies

• Sewing machine & coordinating thread
• Fabric marking pencil or pen
• Quilting ruler with 45° diagonal line
• Rotary cutter & cutting mat
• Iron & pressing surface

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🧵 Instructions

1. Mark

On the wrong side of each background square, draw a diagonal line from one corner to the opposite corner.

2. Layer

Place one green square and one background square right sides together. Align edges and pin if desired.

3. Sew

Sew a scant ¼" seam on each side of the drawn diagonal line.
(A scant ¼" seam is slightly less than a full ¼" to account for fabric and pressing.)

4. Cut

Cut directly on the drawn diagonal line to create two triangle units.

5. Press

Open each unit and press the seam toward the green fabric.

6. Square Up

Using the 45° diagonal line on your ruler, square up each HST unit to measure 4.5" × 4.5".

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C 2026 Sister of The Divide. All rights reserved. This pattern and its instructions are protected by copyright law. No part of this pattern may be reproduced, redistributed, or transmitted in any form or by any means without prior written permission from the designer. You may sell items made from this pattern on a home-based, small-scale basis and may use for charity purposes. Mass production is prohibited. Please credit the design to Sister of The Divide.