Symmetric Decreases: Purl
Posted on 06.15.05 by lucia @ 10:06 am

I’m sure you’ve heard of “knitting knazis”? Those are the people who tell you how to knit, what to knit and what can and cannot be done.

Now, I will admit some knitting knazis are well informed, but I’d say the majority aren’t. From time to time, you will meet one, and they will insist something “can’t be done”. Working left slanting decreases from the purl side is one of those things I have been told “can’t be done”. ( I realized I’d met a knitting knazi because when I said “Sure, it can.”; they responded: “No. It can’t! )

Well, if this “can’t be done” then the picture to the left would not exist! You will notice there are right slanting decreases on the left edge of the swatch and left slanting decreases on the right edge. Let me assure you, I worked these decreases from the purl side! This lesson will show you how to do this. (It is not a new technique and the decreases are discussed in the reference I cite below1.)

P2Tog First, let’s discuss right slanting decreases, which are illustrated on the left side of the swatch viewed from the knit side.

Most intermediate knitters are familiar with the “k2tog” type decrease, which slants right when seen from the knit side. If I bound off the swatch shown above and passed it around, most would assume the right slanting decreases on the left edge were work that way. That’s because it’s the most “k2tog” worked form the knit side is the most common method to create a right slanting decrease.

I wanted to knit the decrease from the purl side. My swatch has two selvedge stitches; the decreases are worked over the 3rd and 4th stitches from either edge. Since I was working on the wrong side facing row (purl side), I worked two stitches, then I inserted the tip of my right hand needle as to purl into the next two stitches (see illustration); I yarned over and purled in the normal fashion.

So, this is just like normal purling except you purl two together, just as the phrase “p2tog” suggests.

Now, how did I work the matching left slanting decrease? If I has been working form the right hand side, I would have worked an “slip-slip-knit” ( i.e. “ssk”) decrease. Instead, I “purled two together through back loops“.

Since I was working on the purl side, I knit across until 4 stitches remained on the left hand needle. Then I:

P2TogTbl

  • slipped the next two stitches purl knit-wise. (This means I inserted the tip of the right hand into the next stitch as to purl knit and transferred it to the right tip. Then I repeated.
  • slipped these two stitches back to the left needle. (The purpose of this procedure is to change the twist on those two stitches.)
  • inserted the right tip through the back loops of the two stitches on the left tip. The only “trick” is to realize that you first insert the right needle tip through the back loop of the second stitch from the left needle tip then continue on through the first stitch. I fold the needles away from me to insert the tip through the back loop; notice how the needles are angled back in the photo to the left? I flatten the angle out when I later I yarn over and purl.
  • I worked the final two selvedge stitches.

The first time you practice this, it’s useful to turn the work around and examine the slant as soon as you work the “p2tog tbl”. That’s what I did when I snapped a photo of my swatch; in the photo, the two selvedge stitches remain on the right needle.

That’s it! It’s not even difficult. If a knitting knazi tells you it can’t be done, say “Nyah”!


Foot note.
1. p. 63 of The Knitter’s Companion by Vicky Square. This is a well designed sturdy flip open knitting reference which includes a needle and stitch gauge.

I used these decreases in Two Color Star Stitch II.

Click to read my other how to knit articles.


Thank you Melynne for pointing out the error in the text! < >


Please leave comments! 10 Comments

10 Comments »

  1. I’m back! And totally out of the loop! I feel like I have been gone a month! There’s so much to catch up on! YOWZA! I will have to read your bloggage tomorrow, I’m exhausted, but wanted to say HI!!!!!

    Comment by christine — 6/15/2005 @ 6:28 pm

  2. Thanks!

    Comment by deb — 8/1/2005 @ 10:22 am

  3. Hi Lucia,

    I love your blog, and read it almost daily.

    But there is one small mistak in your SSP description. You say to slip 2 sts, 1 at a time “purlwise.” It should be “knitwise” because that’s how sts are twisted. That’s what my Vogue knitting book says too, as well as a few other reference books.

    Comment by meilynne — 8/1/2005 @ 12:32 pm

  4. Thanks Meilynne! You’re right, I wrote that wrong. Slipping purls wise, the slipping back is pointless– it doesn’t change the twist. It’s like doing nothing at all. (blush)

    Comment by lucia — 8/1/2005 @ 1:02 pm

  5. Thank you for sharing your knowledge on decreases. I know it was hard for me to find helpful references as left-handed, combination knitter. I didn’t know whether to use the guidelines on decreases using a Google search for left-handed knitters or for combination knitters. So I just sat one afternoon and did right and left decreases on both knit and purl side until they looked like neat, clean, even braids on both sides.

    Comment by Beatriz — 8/8/2005 @ 6:23 pm

  6. You’re welcome Beatriz. I think it’s great you are willing to try until you figure something out. It is difficult to learn how to adapt instructions when you are a combination knitter, and left handed at that.

    One of the reasons I’m writing “knitting ad nauseum” is to have an excuse to show photo’s of the different ways the stitches seat. The next article is going to be combination knitting, and I’ll be mentioning how things seat and how to translate a few directions knitters find in ‘how to’ texts to combination knitting.

    Comment by lucia — 8/8/2005 @ 6:30 pm

  7. [...] 3. Handy illustrations for true beginners: how to work an ssk; how to work a ptbl, that is “purl through back loops.” Amazingly enough, I don’t show k2tog in an individual lesson! Previous posts: ( Chewy Haiku | Home | ID not science, judge decrees.)   [...]

    Pingback by The Knitting Fiend » Blog Archive » Short Row Toe or Heel– Increasing portion. — 1/4/2006 @ 1:17 pm

  8. Thanks for your very good instructions. Even though I have been knitting for many years and particularly like raglan sleeves, I had never needed to do a p2togtbl.

    Comment by Elsa Horowitz — 8/10/2006 @ 10:09 am

  9. thank you so much for this explanation – FINALLY it makes sense and i can have nice, matching, neat decreases. I’ve read so many explanations of how to do this and they didn’t seem logical; you explaining the theory rather than just saying ‘do this, do that’ has made me get it!

    Comment by anna — 2/28/2008 @ 4:58 pm

  10. Hi, I just started knitting and was wondering if someone could help me in regards to what this pattern means … K1, K2 together, K6, WF K1, WF K6, K2 together twice, K6, WF K1, WF K6, K2 together, K1. The part that is throwing me off is the WF K1.

    Comment by Lori — 8/19/2008 @ 7:30 am

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