Read root crowding through a transparent nursery pot

Turn the pot and see where root density changes near the drainage holes or along the rim. Include the plant name and date so the observation has a comparison point later.

Look at an established nursery pot from four sides and photograph the side that faces the window. A photograph can preserve an apparent colour shift while overlooking the surface that caused it. Inspect a shaded as well as an exposed part, and keep a wide image whenever colour might be influenced by a neighbouring wall, water or foliage. A rough sketch of the positions can establish that relationship even when the photograph is dark.

Roots may cluster in one visible panel while other parts of the pot still contain open medium. Notice whether the irregular cases cluster around a time, a particular part of the site or a change in observation method. A bright photo taken at an angle can reveal a marking that was always there. A different viewpoint can equally hide one you had seen on every earlier visit.

Record how quickly the medium changes from wet to dry under your present conditions. Consider the plant's growing requirements before deciding whether a larger pot would help.

A green film on the wall is easy to mistake for extremely fine roots in a photograph. End the entry with the strongest description you can support and the thing you would like to see on a future visit. If somebody else joins you, show them the starting viewpoint and write down what each of you noticed independently. Different observations may reveal where the record needs another angle or a clearer description.

Use a pale backdrop and observe the lower edge and drainage holes directly. Return when at least one condition differs predictably, for example after leaf fall or when the sun is behind you. Note that condition before making a fresh description. The new view may bring out a feature hidden earlier and help you decide whether your opening description was simply incomplete.

Compare the condition with a labelled younger pot of the same plant if one is available. Give each record a date and keep the site description precise enough for you to return. A wide view is worth keeping with a detail picture. It can show that a branch is near a reflective surface, that the bank slopes away, or that a nearby tree changed the background between visits.

Give an observation room to stay unresolved. A sketch, a time and a place can be worth keeping even when the exact name or cause is unclear. Repeated visits may close one gap and open another. When they do, use a note beside the original date so it remains possible to see how your reading changed. If you share the record, choose a photograph that shows the most informative feature you can safely see and one with wider context. Add the season, general habitat and what remained outside the frame. For a recurring observation, keep the same short fields and compare the records on their own before looking at possible explanations. Separate pale growing tips from loose fibres in the potting mix. A view at the drainage hole may clarify whether what you see is attached to a root. Start with enough detail to recognise the same part of the site without relying on memory. Draw a landmark fixed outside the feature you are following. A straight branch can bend or disappear, but the corner of a wall or the distance from a path junction can still identify the intended observation area.

Take a photo from the same angle on consecutive checks to see whether dense areas have expanded. Try a brief independent comparison with an observer who has not read your description. Ask them to point to the feature they would put first in a record. Differences in what you notice can reveal an unclear boundary or a second clue worth photographing. Include their position in the notes if the viewpoint changed.