Wet into Wet

The most magical — and most unpredictable — watercolour technique

The three stages of drying

Almost every wet-into-wet decision depends on timing. Watercolour paint passes through three stages:

Very wet — paint flows freely, colours spread wide
Damp — paint is mobile but slowing; this is the "damp is dangerous" phase. A brush with too much water here will cause cauliflower blooms
Dry — paint is fixed; marks will have hard edges

Always test techniques at all three stages on a scrap of paper before applying to a painting.

How to read paper wetness

Tilt the board and look at the surface from a low angle. You want to see a uniform sheen — not pools, not dry patches. If the surface looks glassy, it's too wet; wait. If there's no sheen at all, it's too dry.

Getting an even wet

Wet the paper with clean water using a flat brush
Let the water settle into the paper fibres
Apply a second layer of water on top
Check from the side before adding any colour

Extending working time

For very long wet-into-wet sessions (like daisies or complex backgrounds), wet both sides of the paper and work on a non-absorbent surface such as perspex or glass. The water acts as adhesive and keeps the paper workable for much longer.

▶ My neighbour's daisies (part 1)▶ Bold poppies ▶ A lamb

Timing: when to add each colour

The key rule: drop colour gently onto the wet surface and let the water carry it — don't push or scrub. The wetter the surface, the further the colour will travel.

What happens at each stage

Into very wet paper: colour spreads widely, soft diffuse edges — use for distant backgrounds, atmospheric skies
Into damp paper: colour spreads less, edges are soft but more controlled — use for mid-ground elements
Into nearly-dry paper: colour barely moves, edges are sharp but slightly textured — use for near-foreground details painted wet-into-wet

Let dry naturally before using a hairdryer — colours continue to move and separate as they dry, and forcing the drying too early can stop that process mid-way.

▶ Autumn trees ▶ Waterlily pond ▶ Beautiful bonnet mushrooms

Large wet-into-wet areas

For skies, large backgrounds, and full-page washes, preparation before touching the paper is everything.

Checklist before wetting

Mix all colours on the palette before wetting — once the paper is wet, you have no time to mix
Have all brushes, paper towels, and tools within reach
Wet the area twice; let the first pass settle
Check for dry patches or halos around edges — these will cause hard lines
Work with a large brush and don't reload too many times

The dry halo problem

A dry edge around masking tape, an object, or the border of a wet area will cause paint to stop abruptly and leave a hard, visible line. Run an almost-dry brush along any edges where this might occur.

▶ Climbers in the Alps (part 1)▶ Imaginary snowscape ▶ Norwegian winter

Dropping colours into wet paint

Rather than mixing colours on the palette and applying one flat hue, drop separate colours into the wet wash on the paper. They will merge, separate, and granulate in ways no palette-mixed colour can replicate.

The technique

Apply a base wash first — usually the lightest colour
Hold the loaded brush above the wet surface and touch gently — let the paint fall rather than being pushed in
Drop darker or contrasting colours into selected areas while still wet
Do not scrub — if colour goes somewhere unwanted, lift immediately with a clean dry brush or paper towel

Colour combinations that separate beautifully

Ultramarine + quinacridone sienna (granulating shadow mix)
Cobalt blue + burnt umber (granulating grey for backgrounds)
Any two colours of different particle sizes — the heavier pigment sinks while the lighter floats

▶ Colour mixing with primaries ▶ Yacht at sunrise ▶ Matterhorn in spring