Sketching Forest Flora: Field Techniques

Sketching plants in the field is a different activity from drawing at a desk. The light shifts, the wind moves things, and sitting on damp ground for twenty minutes to study a single fern frond is not always comfortable. The techniques that work consistently in the field are those that accommodate these conditions — prioritising accuracy of proportion and structure over finish, and building from quick rough outlines toward detail rather than the other way around.

This article focuses on the specific challenges of sketching Canadian boreal and mixed forest flora: mosses, ferns, herbaceous plants, shrubs, and the fungi and lichens that are significant components of the forest floor community.

Starting with structure, not detail

The most common mistake in field sketching is beginning with a detail — the edge of a leaf, a vein pattern, the texture of bark — before establishing the overall form. In the field, where you may have only a few minutes before light changes or conditions shift, this produces a detailed fragment that does not give a clear picture of the whole plant.

A more effective sequence:

1. Block in the overall outline of the subject in light pencil lines — a rough shape that captures height, width, and general form
2. Identify and mark the main structural divisions — where leaves attach to the stem, where branches divide, the orientation of the root zone
3. Note measurements in the margin: total height, leaf width at broadest point, distance between nodes
4. Add detail to one section only, enough to capture the characteristic texture or pattern of that plant part
5. Record colour notes in writing rather than trying to mix colour on-site, unless you are using watercolour pencils

This approach produces a sketch that is useful for identification even if it is finished quickly, because the proportions and structural relationships are accurate.

Working with mosses and lichens

The forest floor of Canada's boreal and mixed forests is often dominated by mosses, lichens, and liverworts — collectively a significant component of the ecosystem and among the least-documented groups in amateur nature journals. They are also among the most difficult to sketch because of their small scale and complex texture.

For mosses and lichens, close-focus work is more productive than trying to sketch a wide area. Choose a patch of 20 to 30 centimetres and work within that frame. Useful observations to note:

• Substrate — what the moss or lichen is growing on (rock, bark, duff, fallen log)
• Moisture condition at time of observation — dry and contracted, or moist and expanded
• Colour range across the patch — many mosses shift significantly between wet and dry states
• Any associated species growing in contact with the moss or lichen
• Sketch the growth form at 2–3x the actual size, noting the scale in the margin

For identification later, collecting a small sample in a paper envelope — not plastic, which traps moisture and promotes decay — is more reliable than a sketch alone. The sample dries flat and can be examined with a hand lens.

Ferns of the Canadian forest understory

Several fern species are common enough across Canadian forests to be worth learning to distinguish by sketch. The structure of fern fronds — the degree of division, the shape of individual pinnae, the pattern of sori on the underside — varies clearly between species and can be captured in a field sketch with practice.

A fern sketch that includes a single pinna drawn at 2x natural size, with sori placement noted and their shape described, is often more useful for identification than a full-frond sketch without those details.

Common species worth documenting across Canadian regions include:

• Dryopteris expansa (spreading wood fern) — prominent in moist coniferous forest, notably in British Columbia
• Athyrium filix-femina (lady fern) — widespread in moist disturbed areas and streamside zones
• Matteuccia struthiopteris (ostrich fern) — large, vase-shaped, common in floodplain forest across southern Canada
• Polystichum acrostichoides (Christmas fern) — persistent through winter, useful for winter journal entries

Recording seasonal change

One of the most valuable functions of repeated sketches from the same location is documenting seasonal phenology — when species emerge, reach peak growth, fruit, and senesce. For forest flora, this is most visible in spring (fiddlehead emergence in ferns, leaf-out in herbaceous plants) and autumn (leaf colour change, fruiting in shrubs, die-back in annuals).

A useful journaling practice for seasonal documentation is to identify three to five fixed points in a familiar forest area — a particular fallen log, a rock face, a patch of moss in a consistent light condition — and photograph or sketch each point every two to four weeks across the growing season. Over several years, this builds a visual record of how the site changes across seasons and how year-to-year variation affects timing.

Fungi: a separate set of considerations

Fungi appear in Canadian forests throughout the growing season but are most conspicuous in late summer and autumn, particularly following periods of rainfall after dry spells. Sketching fungi in the field involves a few specific challenges:

• Cap surface texture — dry, moist, viscid, or fibrous — changes within hours depending on weather
• Gill colour and spacing are important identification features; sketch the underside separately
• Spore print colour requires placing the cap gill-side down on white paper for several hours — note this as a follow-up step rather than trying to capture it in the field
• Record the substrate — on soil, on a specific wood species, emerging from roots, on leaf litter
• Note the smell, which is a legitimate identification characteristic for many species

For mycelium and fruiting body relationships, a small careful excavation around the base of the fruiting body often reveals the substrate connection and any rhizomorphs — root-like fungal structures — that can be noted and sketched.

Canadian Bunchberry: a useful study subject

The Canadian bunchberry (Cornus canadensis) is a low-growing woodland plant widely distributed across Canada's forests, from Newfoundland to British Columbia. It is one of the most useful flora subjects for field sketching practice because it is abundant, present across many forest types, and changes visibly through the seasons — white four-petalled flowers in spring, green leaves through summer, and clusters of bright red berries in late summer and autumn.

A series of sketches of the same bunchberry patch across the growing season — spring flower, summer leaf, and autumn berry — is a self-contained phenology study that requires minimal travel and illustrates the value of returning to the same place repeatedly.

External references

• iNaturalist Canada — photo-based species identification and regional checklists
• NatureServe — range and status information for Canadian plant species