• The Beginner’s Guide to the Triangular Paintbrush

    Today’s article is a little different—it’s more like a video workshop! I recommend bookmarking it so you can go through each section at your own pace and really get the hang of using the triangular brush.

    Watercolor flowers made with a triangle brush

    A triangular brush (sometimes called a wedge brush or dagger brush) is an incredibly versatile tool in watercolor painting. It has a flat base that tapers to a fine point, allowing for both broad washes and sharp details. Once you get the basics down, painting with it feels intuitive and soothing. Today, my goal is to walk you through how to paint everything from foundational strokes to abundant floral wreaths.

    Getting to Know the Triangular Brush

    If you don’t have a triangular paintbrush, now is a great time to get one (affiliate link). I recommend getting both sizes—the MD and the XSM—if possible. Once you receive your paintbrush, take a good look at it to begin understanding how it works.

    A triangular paintbrush with watercolor roses

    You’ll notice that your brush has the following:

    • A flat base – Great for broad strokes, washes, and blending
    • A tapered point – Ideal for making fine lines and delicate details
    • An angled edge – Facilitates smooth transitions between thick and thin lines

    Basic Strokes and Techniques

    As soon as you’ve got your triangular brush in hand, take a little time to play around with the five basic strokes. The quick 4-minute demo video below walks you through everything, and there’s a written breakdown and visual to go with it as well.

    1. Broad Stroke – This foundational stroke is great for leaves and petals. To make it, load your brush with watercolor and lay it flat on the paper. Then, use a gentle sweeping motion to create thick, even washes.

    2. Fine Lines – Fine lines are perfect for making stems, branches, and filling in details. To create one, hold your brush at a 45-degree angle and use just the tip to create thin, delicate lines.

    3. Tapered Strokes – Like broad strokes, tapered strokes are great for leaves and petals. To make a tapered stroke, begin by pressing the flat side of the brush down to make a thick base. Then, slowly lift toward the tip to create a clean, pointed end.

    4. Triangle Strokes – Triangle strokes make fabulous flower petal shapes. To make one, press the flat side of the brush down to create a thick start. Then, keep the tip in place while gently dabbing the belly of the brush to one side, forming a soft triangle.5. C Strokes – Good for rosebuds, curled petals, or leaves that fold inward.

    5. C Strokes – “C” strokes are good for rosebuds, curled petals, or leaves that fold inward. To paint this type of stroke, start by touching the tip of your brush to the page. Then, move in a “C” or “U” shape (left or right), gradually pressing down so more of the brush makes contact with the paper. Finish by lifting the brush quickly to result in a tapered edge.

    Basic triangular brush strokes

    Try filling up a whole page with these strokes—it’s a great way to build muscle memory and get comfortable using the triangular paintbrush. Once they start to feel natural, you’re ready to move on to making stems and leaves!


    Stems and Leaves Practice

    Creating stems and leaves with a triangular brush is simple and satisfying. Start with a thin stroke for the stem, then use tapered strokes to add graceful leaves. Watch the demonstration below for detailed instructions:

    Once you’ve watched the video tutorial, try using your triangular paintbrush to fill up a page with stems and leaves. Let yourself just play, and if you want to add some watercolor calligraphy into the mix, do it!

    Watercolor leaves created with a triangular paintbrush
    I used a Shinola sketchbook to hone my triangular paintbrush skills. This sketchbook handles watercolor surprisingly well!

    Basic Flowers + Wreath Practice

    The tapered stroke is very powerful when it comes to painting basic flowers! Follow along with this demonstration to learn how to combine flowers, stems, and leaves to make a quick and pretty wreath.

    To get the hang of this exercise, try making a few of your own wreaths. Combine basic flowers in various colors along with stems and leaves to flesh out a circle, rectangle, or oval. Once you’re finished, consider adding lettering or calligraphy to the inside!

    Wreaths created with a rectangular paintbrush
    Floral wreaths are one of my favorite ways to practice using a triangular paintbrush—they’re relaxing, playful, and they always turn out pretty.

    Pinwheel Flowers Practice

    You can center triangle strokes around a center point to make “pinwheel flowers”. In the tutorial video below, I’ll show you how to use both sizes of triangular brushes to make “pinwheel flowers”. You’ll also learn how to load the brush with two different colors and how to add in dainty complementary leaves.

    In the video, I shared the envelope below, which was created by artist and calligrapher Phyllis Macaluso. If you like this motif, try mimicking aspects of it in a sketchbook or on your own envelope art!

    An envelope created by Phyllis Macaluso
    Artist Phyllis Macaluso is the queen of the triangular paintbrush. Many of her TPK tutorials, including this trifold card and these fairytale cakes, include triangular paintbrush elements. Be sure to check them out!

    Delicate Rosebuds Practice

    Once you’re feeling confident with the strokes and motifs we’ve covered so far, give rosebuds a try! They’re a bit looser and trickier at first—but once you get the hang of them, you’ll be adding beautiful little blooms to everything.

    When it comes to these rosebuds, I encourage you to experiment! Try a different combination of colors, or arrange your rosebuds into a wreath. Remember that if you don’t get these on the first try, you’re not alone. Achieving an elegant, natural-looking rosebud shape took me quite a while to master.

    Loose rosebuds created with a triangular paintbrush
    Rosebuds are great for filling up half of an envelope (as shown here), enhancing cards, or adding interest to a floral wreath.

    Keeping Your Brushes Clean and Crisp

    Now that you’ve learned how to use your triangular brush, let’s talk about how to keep it in top shape. First, always rinse your brush thoroughly after use. Then, store it flat or upright to maintain its shape. If the bristles start to fray or splay, you can use gum arabic to reshape them.

    A paintbrush with pinwheel flowers
    Proper care helps your triangular brush stay in top form. If it loses its shape, it won’t paint the same—so a little upkeep is worth it!

    I want to reiterate that this beginner’s guide is more of a video course than brief overview. It’s important to take in all of this information one section at a time, starting with the basic strokes. Give yourself a few days to practice the strokes and exercises, and don’t rush it. A slow and steady pace makes for confident, joyful painting!

    Wreaths Made Using a Triangular Paintbrush

    A huge thank you for being part of this community and for supporting content like this. Your membership helps make in-depth tutorials like this possible. I hope you walk away from this guide feeling artistically energized and ready to create!

    Warmly,