Beautiful crocheted square flower motifs, likely made using a technique called popcorn stitch or bobble stitch for the flower petals, and double crochet (or treble in UK terms) for the surrounding square.
Here’s a general step-by-step guide to create a similar crochet square flower pattern:

🌼 Crochet Square Flower Motif Pattern (Detailed)
🧶 Materials Needed:
- DK or worsted weight yarn (3–4 colors optional)
- Crochet hook (typically 3.5–4.5 mm depending on yarn weight)
- Yarn needle
- Scissors
📘 Abbreviations (US Terms):
- ch = chain
- sl st = slip stitch
- sc = single crochet
- dc = double crochet
- pc = popcorn stitch (explained below)
- st(s) = stitch(es)

💡 Special Stitch: Popcorn Stitch (pc)
Popcorn Stitch (5 dc version):
- Make 5 dc in the same st/sp.
- Remove hook from loop, insert it into the first of the 5 dc.
- Grab the dropped loop and pull it through.
- Ch 1 to secure (unless stated otherwise).
🧵 Instructions:
Round 1 – Center Circle
- Ch 4 and join with a sl st to form a ring (or make a magic ring).
- Ch 3 (counts as dc), then make 11 dc into the ring.
(12 dc total including ch-3) - Join with sl st to the top of the beginning ch-3.
Round 2 – Popcorn Petals
- Ch 3 (acts as 1 dc).
- In next st, make a 5-dc popcorn stitch (see above).
- Ch 2, popcorn in next st, repeat from * around.
- You should have 12 popcorns separated by ch-2 spaces.
- Join with sl st into the top of the first popcorn/ch-3.
Round 3 – Start Squaring the Shape
We’ll begin forming the square here.
- Sl st into the next ch-2 space.
- Ch 3 (counts as dc), 2 dc in same space, ch 2, 3 dc in same space — this forms corner 1.
- In next ch-2 space: 3 dc (side).
- In next ch-2 space: 3 dc, ch 2, 3 dc (corner 2).
- Repeat: (3 dc in next ch-2 space), (3 dc, ch 2, 3 dc in next ch-2 space) around.
- Join with sl st into the top of starting ch-3.
Now you have a square shape with 4 corners.
Round 4 – Build the Square Bigger
- Sl st to corner space.
- Ch 3 (counts as dc), 2 dc in same space, ch 2, 3 dc in same space (corner).
- Work 3 dc in each 3-dc group space from previous round (sides).
- At corners: (3 dc, ch 2, 3 dc) in ch-2 corner space.
- Repeat around.
- Join with sl st.
Round 5+ – Optional for Larger Square
Repeat the same structure:
- Corners: (3 dc, ch 2, 3 dc)
- Sides: 3 dc in each space between 3-dc groups
✅ Finishing
- Fasten off and weave in ends using a yarn needle.
- Block the square to even out shape if needed.

🖼️ Final Result
You should end up with a 3D flower centered in a neat square, just like the ones in your image. You can join multiple squares together to create:
- Blankets
- Bags
- Pillow covers
- Table runners

Video tutorial : How to crochet square bobble stitch blanket