When crocheting plaid, you have to do three steps: the net base, the woven in plaid stripes, and the trim.
Crochet Plaid Blanket:
With the trim, My finished blanket measured 45"x52".
Crochet hook: I used size I
4 colors of worsted weight yarn: I used Red Heart Super Saver Solids Yarn.
My colors were: A- Dark Orchid B- Claret C- Light Sage D- Coffee
Step 1: The Net Base
(See the color pattern below)
Working with color A, chain (ch) 147
Row 1: Double Crochet (dc) in the 5th ch from hook, *ch 1, skip 1 ch, dc in next ch* repeat across. Turn.
Remaining Rows: Ch 5, *dc in dc, ch 1* across. When you get to the end of the row, dc in 4th ch from previous row. Turn.
Here is the color pattern for the rows:
*AAAAAACDBBBBDC* Repeat the color pattern 6 times, then finish with 6 more rows of color A. Finish off.
Step 2: Woven in Plaid:
Attach yarn to the foundation chain in the first square at the left edge of the first row. Hold the yarn behind work with your left hand and draw a chain through the front. Insert hook in the next hook directly above and draw through another chain. Continue to the top edge, working loosely enough so that the work will lay flat. (Remember to make sure you are always making the next chain directly above the previous one.) Finish off.
Repeat this, always starting in the square next to the one you started in previously.
Use the same color pattern as above:
*AAAAAACDBBBBDC* repeat to end.
Step 3: The Trim:
Attach color A to one corner of the work. Work sc all the way around. I like to hold all of the loose ends close to the work here, thus "weaving" them in with my single crochets.
Now work the trim of your choosing.
I chose a V-stitch for the trim on my blanket.
To do a V-stitch, you ch 4 (counts as first dc + ch 1), dc in same st, skip 2 sts, *dc into next st, ch 1, dc in same stitch, skip 2 sts*, repeat * to * .
For the next row, work your V-stitch in the V-stitch from the previous row.
Here is the color pattern:
Finish off and weave in all ends.