An end-of-season review is a look back at the weather, the plants and the patterns of the past year. In Britain, where no two summers are alike, comparing a season with long-term climate averages and with personal observations helps explain why some plants flourished and others struggled. The value of a review lies less in any single conclusion than in the record it builds over many years.
By the Seedsmaster editorial team.
Key takeaways
- Every British season is different: Rainfall, sunshine and temperature vary considerably from year to year.
- Averages provide context: Comparing a season with long-term averages shows whether it was typical or unusual.
- Observation is the core skill: Notes on flowering, leaf colour and plant structure become more useful each year.
- Place matters:Microclimates can make neighbouring gardens behave like different regions.
- Records compound: Several years of notes reveal patterns that a single season cannot.
Why a seasonal review is a British gardening tradition
Keeping a garden diary has a long history in Britain. Naturalists such as Gilbert White recorded the first swallows, the flowering of hedgerow plants and the arrival of frosts in his Hampshire village in the eighteenth century. His observations are still cited today because they show how seasons have shifted over time. Many allotment holders, orchard keepers and botanical enthusiasts continue the tradition, noting each autumn what the year was like.
The appeal is easy to understand. British weather is famously changeable, and memory is unreliable. A season that felt wet may turn out to have been close to average, while a summer remembered as warm may have had several cool weeks at a crucial moment. Writing things down replaces impressions with evidence.
For anyone interested in cannabis as a plant, whether as a botanist, collector or historian, the same approach applies. Varieties are described in catalogues with expected heights, flowering periods and climate preferences. A seasonal review places those descriptions alongside the real conditions of a British year.
The weather of the year in context
The starting point of most reviews is the weather. The Met Office publishes monthly and seasonal summaries for the United Kingdom and its regions, comparing temperature, rainfall and sunshine with long-term averages. These summaries make it easy to see whether a particular spring was unusually dry, a summer unusually dull or an autumn unusually mild.
Context matters because averages hide a lot of variation. Our article on UK climate averages and local weather explains why a national figure can differ considerably from conditions in a particular town. A summer that was dry for England as a whole may still have been wet in western Scotland or Wales.
Spring
Spring in Britain runs broadly from March to May. Reviews often note the date of the last frost, the timing of the first warm spell and how quickly soils warmed. A late, cold spring delays plant development across the country, while an early warm spell can bring growth forward before frosts return.
Summer
Summer weather is usually judged by sunshine and rainfall. Long dry spells, heat peaks and prolonged unsettled periods all leave their mark on plants, and the contrast between south-east England and the north-west can be striking in any given year.
Autumn
Autumn brings shortening days, cooler nights and increasing humidity. Our overview of autumn weather and seasonal change in Britain describes how September and October typically unfold. For plants that are still flowering late in the year, the onset of persistent damp is often the defining feature of the season.
Botanical observations through the season
Weather records describe the conditions. Botanical observations describe how plants responded. Together they form the heart of a seasonal review.
Growth and structure
Notes on height, branching and leaf shape help show how a plant developed in a particular year. Cannabis is a highly responsive plant, and the same variety can look quite different in a cool, dull summer than in a warm, bright one. Internodes, the spaces between leaf pairs, tend to lengthen in lower light and stay shorter in strong sunshine.
Flowering
Photoperiod cannabis begins to flower as nights lengthen in late summer. Recording when the first pistils appeared, how quickly flowers developed and when they matured gives a useful comparison with catalogue descriptions. Autoflowering types, which flower according to age rather than day length, follow a different rhythm and are best recorded from the date of first growth.
Colour and senescence
As autumn advances, leaves naturally yellow and some varieties develop purple or red tints in cool weather. These changes are part of senescence, the plant’s natural ageing process. Our article on autumn botany and the British seasonal context explores these changes in more detail.
Damp and fungal activity
In wet autumns, grey mould and powdery mildew become more common on many garden plants, from roses to courgettes. A review often notes when and where these problems appeared, which can be linked to spells of high humidity. Our explanation of humidity, dew point and condensation shows why still, damp nights are especially significant.
Microclimates and the influence of place
One of the most valuable lessons of a seasonal review is how strongly place shapes outcomes. A south-facing wall, a sheltered courtyard or an urban garden warmed by surrounding buildings can have a markedly different climate from an exposed hillside a few miles away. Frost pockets form in valley bottoms, coastal gardens enjoy milder winters but stronger winds, and gardens in the rain shadow of hills receive noticeably less rainfall.
Recording where plants grew, and how sheltered or exposed each spot was, helps separate the effect of the year’s weather from the effect of location. Over time, these notes often reveal which corners of a garden are reliably warmer, drier or more sheltered.
Records, notebooks and what they reveal over time
The format of a record matters less than its consistency. Some people keep a handwritten notebook, others use a spreadsheet or a phone app. Useful entries tend to include:
- Dates of key stages, such as first growth, first flowers and maturity.
- Brief weather notes, especially unusual events such as storms, heat or frost.
- Photographs taken from the same position at regular intervals.
- The names and catalogue descriptions of the varieties observed.
- Short reflections on what seemed different from previous years.
A single season’s record is interesting. Five or ten seasons of records are genuinely informative. Patterns emerge, such as how often September turns wet, how much variation exists between varieties in a cool year, or how a particular part of the garden behaves in a dry summer.
Comparing records with published data
Personal observations become even more useful when compared with published climate data. Met Office regional summaries, local weather station records and long-term averages give a wider frame. If a personal record notes an unusually late flowering year, checking the published sunshine and temperature figures for that summer can help explain why.
Avoiding hasty conclusions
A seasonal review is most useful when it stays modest about cause and effect. Many factors change at once from one year to the next: the weather, the position of plants, the varieties observed and even the amount of attention a garden received during busy months. A single cool summer does not prove that a variety is unsuited to Britain, and a single excellent year does not guarantee a repeat. Seeing each review as one data point among many keeps interpretations grounded.
It also helps to separate observations from opinions in a notebook. Writing that flowers first appeared in the second week of September is an observation. Writing that a variety is slow is an interpretation that may change with more evidence. Keeping the two apart makes old notes easier to reread with fresh eyes years later.
Seed collections and plans for the coming year
For collectors of cannabis seeds, the end of the season is also a natural moment to review a collection. Catalogue descriptions provide information on expected size, flowering period and climate suitability, and a year of observations shows how well such descriptions match British conditions. Varieties described as compact, quick to mature or tolerant of cool, damp conditions often attract attention among British enthusiasts for exactly this reason.
Seed storage is another common autumn topic. Seeds keep best in cool, dark and dry conditions, and many collectors store them in airtight containers away from temperature swings. Labelling with the variety name and the date of acquisition keeps a collection organised from one year to the next.
Regional notes
Seasonal reviews look different across Britain. In the south-east, a review might focus on summer dryness and heat. In Cornwall and the south-west, mild winters and Atlantic weather dominate the notes. In northern England and Scotland, shorter summers and earlier autumn weather are recurring themes, while Wales and the Lake District often record the effects of high rainfall. Recognising these regional patterns makes each personal record richer and easier to interpret.