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Tristina Dietz Elmes, Artist

Painter - Teacher - Content Creator
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My articles below contain tons of instructions for acrylics, watercolor, colored pencil, oil pastel and other mixed media painting mediums and techniques. Feel free to ask questions in the comments area. Enjoy!๐ŸŽจ๐Ÿ˜

I also have included links to my favorite art supply retailers on my website. I earn commissions on qualified purchases from links below that lead to Amazon or Blick Art Materials.

While supplies last, BLICK ART MATERIALS is holding an Overstock Liquidation Sale. Just click the picture below to go to Blickโ€™s Overstock SALE page on their website. Happy Shopping!

Onion Painting in Watercolor on Wood and Canvas Live Painting

March 7, 2026

In this article I share how to prepare surfaces other than paper to receive watercolor paint using a Watercolor Ground medium. Surfaces discussed are canvas, wood, plastic, glass and metal. Then, I paint 2 onions (one white and one red) on 2 canvas surfaces; one of which has been tinted.

โ€œSprouting Onion 2โ€ watercolor on wood panel sealed with wax by artist Tristina Dietz Elmes.

Some of the things you will learn from this workshop include:

  • what is watercolor ground medium;

  • what sealers to use if your surface is porous (wood) or non-porous (canvas, metal, glass) before applying watercolor ground medium;

  • how to apply watercolor ground medium;

  • how to tint watercolor ground medium;

  • building watercolors in layers on a prepared surface;

  • how easy it is to lift color and make adjustments on a surface prepared with watercolor ground medium;

  • how to seal a watercolor painting if you do not want to put it behind glass;

  • and moreโ€ฆ

โ€œSprouting Red Onionโ€ watercolor painting on tinted canvas panel by Tristina Dietz Elmes. At the time of writing this article, the original painting is available on my Etsy Shop HERE.


Watercolor Painting on Special Surfaces Workshop Video Replay

Below is the full video workshop of my Live painting session. The paints, surfaces and accessories used in the video are listed afterwards in this article. Enjoy! ๐ŸŽจ

Here are the video timeline sections if you want to jump to a particular part of the live session:

0:00:00 - Intro To Prepping & Painting Watercolor Onions on Various Surfaces
0:05:47 - Porous vs Non-Porous Surface Prep Supplies & Techniques
0:23:56 - Paints & Other Supplies
0:40:10 - Paint Colors & Pigments Discussion
0:52:47 - Paint Yellow Onion on White Canvas
1:36:09 - Paint Red Onion on Tinted Canvas

Here is the paints Pigment details database I mentioned during the live class:
https://www.artiscreation.com/Color_index_names.html

Here are my reference images of the Sprouting Onions:

Feel free to ask me any follow-up questions in the comments below. Thanks for watching! ๐Ÿ˜


Supplies List for Watercolor Painting on Special Surfaces Workshop

The Schmincke Horadam Watercolors I used from the tube during the workshop were:
Quinacridone Gold Hue #217 (PY150, PR101)
Transparent Sienna #653 (PR101)
Yellow Orange #222 (PY110)
Gold Brown #654 (PY65, PBr41)
Mahogany Brown #672 (PBr33)
Bordeaux #362 (PR187)
Helio Cerulean Blue #479 (PB15:3)
Green Earth #516 (PBr7, PG7)
May Green #524 (PY151, PG7)
Perm. Green Olive #534 (PO62, PG7)
Perylene Green #784 (PBk31)

Here are links to the supplies list for the surfaces, mediums, paints and accessories shown during the video. As a Blick Affiliate and Amazon Associate I earn from qualifying purchases for links below that lead to Blick Art Materials or Amazon.

  • Schmincke Watercolor Tubes and Pans on Blick - https://www.jdoqocy.com/click-101491996-12117697?url=https%3A%2F%2Fwww.dickblick.com%2Fproducts%2Fschmincke-horadam-aquarell-artist-watercolor-paints%2F

  • Daniel Smith and Golden Watercolor Ground, Various Sizes and Colors - https://amzn.to/4aM9d9O

  • Golden GAC 100 Acrylic Sealer for Porous Surfaces (wood) 8oz Bottle - https://amzn.to/4cVkNAS

  • Golden GAC 200 Acrylic Prep for Non-Porous Surfaces (glass, plastic, metal) 8oz Bottle - https://amzn.to/4r571iI

  • Pebeo Gouache Opaque Watercolors 12ml Tubes Set of 12 - https://amzn.to/4aUnXSN

  • Turner Acryl (Acrylic) Gouache 20ml Tubes Set of 12 - https://amzn.to/4aWVGuT

  • Dr PH Martins Bleedproof White 1oz Jar - https://amzn.to/4s6PTtw

  • Jacquard Dorland's Wax Sealer 4oz Jar - https://amzn.to/3OICZDV

  • US Art Supply Spiral Bound Watercolor Paper Set of 3 - https://www.amazon.com/dp/B08T21BSDQ?ref=t_ac_view_request_product_image&campaignId=amzn1.campaign.2KXA587IB1GL4&linkCode=tr1&tag=dietzart-20&linkId=amzn1.campaign.2KXA587IB1GL4_1772431089872

  • Canson XL Watercolor Paper Cold Press 140lb 9x12in 30 Sheets Spiral Bound - https://amzn.to/4rp0v6P

  • Shuttle Art 34-Pack Various Sizes Stretched 3/4" Canvas and Canvas Boards, GOOD DEAL - https://www.amazon.com/dp/B08XYYRCMP?ref=t_ac_view_request_product_image&campaignId=amzn1.campaign.1KIILYXYJ2XBZ&linkCode=tr1&tag=dietzart-20&linkId=amzn1.campaign.1KIILYXYJ2XBZ_1772431765381

  • Falling in Art Birch Wood Panels 3/4" Cradle Various Sizes Available - https://www.amazon.com/dp/B08M98KH6C?ref=t_ac_view_request_product_image&campaignId=amzn1.campaign.21H8S0VXWUS5N&linkCode=tr1&tag=dietzart-20&linkId=amzn1.campaign.21H8S0VXWUS5N_1772432101876

  • Fuumuui Professional Series 10 Brush Set - https://amzn.to/3ZcuzXj

  • Princeton Brush Willow's Blender 3/8" - https://amzn.to/40oLQxf

  • White Ceramic Palette Tray 8x4in - https://amzn.to/4rIoONv

  • White Ceramic Palette Tray 10x5in - https://amzn.to/4ayFCAA

  • Faber Castell Collapsible Tulip Edge Brush Holder Water Cup - https://amzn.to/3Pxxyon

  • General's The Master's Brush Soap 2.5oz Jar - https://amzn.to/49k2Jgq

  • General's The Master's Brush Soap 24oz Tub - https://amzn.to/49k2Qsm

  • Wood Brush Rest Stand Set of 2 Holds 4 Brushes Each - https://amzn.to/3OrurOi

  • My Recommended Cloth-Like Viva Paper Towels 3 Double Rolls - https://amzn.to/3EPZhOW

    ๐ŸŽจ๐ŸŽจ๐ŸŽจ

    Note that most of the list of supplies above can be found on the Blick Art Materials website and shipping is generally free for orders of $79 or more. Check them out here:
    https://www.jdoqocy.com/click-101492004-12117697?url=https%3A%2F%2Fwww.dickblick.com%2F
    ************************************

    If you would like to see other paints, mediums and art supplies that I recommend, click below to go to the Supply Links page on my website:
    https://www.dietzart.gallery/supply-links


    Or, check out art supply recommendations on my Amazon Storefront.
    As an Amazon Associate I earn from qualifying purchases.
    https://www.amazon.com/shop/tristinadietzelmes


Sprouting white onion watercolor painting on stretched canvas by Tristina Dietz Elmes.

FREE Live Art Lessons Sunday Afternoons

SUNDAY afternoons I teach a FREE ART LESSON simulcast on YouTube Live and on the WhatNot auction platform followed by a giveaway and sale of my handmade artworks, gift items and some art supplies on WhatNot. You can follow the QR code appearing in the YouTube video or follow the Invite link in the video description to join me on WhatNot for some great Live Auction Art & Gifts deals.

If you're new to Whatnot, sign up with the following link and get $15 in Whatnot credit to use to shop on the platform:

https://www.whatnot.com/invite/tristi...

I hope you'll join me and the thriving Artisan community over on WhatNot soon!


Where to Find My Links

Sign up for my Artsy Newsletter here:
https://www.dietzart.gallery/newsletter ๐Ÿ“œ

Follow my other social channels for cool painting hints and tips:
https://www.instagram.com/dietzart/
https://www.pinterest.com/dietzart/
https://www.facebook.com/TristinaDietzArt/

Check out and purchase my artworks on Etsy here: ๐ŸŽจ https://www.etsy.com/shop/TristinaDietzArt

If you found my information helpful, I always appreciate tips at Buy Me a Coffee! Thank you for your support.โ˜•
https://ko-fi.com/tristinadietzart

Happy Arting! ๐ŸŽ‰

In Art Lessons, Workshops Tags free art class, free art lesson, step by step, Watercolor, watercolor painting, Watercolor on Wood, Watercolor on Canvas, Watercolor Ground, Daniel Smith Watercolor Ground, Golden GAC 100, Golden GAC 200
Water Birds in Watercolor Live Painting →
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