North Dakota · Prairies & Great Plains · hardiness zone 4a
Now
15°C · Partly cloudy
Today
16° / 10°
Rain, 7 days
7 mm
Season
Fall · frost in ~27 d
Wind shift and a drop in pressure — stake, tie in, and pick anything ripe before it arrives.
Writing your field guide — reading the forecast, the moon and the map…
Overhead · Fargo, North Dakota
The two clocks nothing on the ground can argue with: the length of the day, and the phase of the moon.
The sun
12h 35m of light
Sunrise
07:05
Solar noon
13:22
Sunset
19:39
A month from now the day will be 1h 40m shorter. Enough light for steady growth.
Right now · Fargo, North Dakota
Nothing here is a guess. Each of these is read from this week's forecast and this location's climate record, and each one is pushing the season one way or the other.
14.5 °C soil · 7.1 mm
Steady breakdown. Worms and fungi are moving last year's leaves into this year's soil.
Fungi and bacteria turning last season into next season's soil. The same warm, wet window that runs a compost heap also fruits the mushrooms.
7.1 mm / 7 days
7.1 mm across 1 day — short of the ~25 mm a week most beds want. Top up the thirstiest rows.
Sets the pace for everything: germination, fungal fruiting, slug nights, and how a river runs for the next three days.
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The moon
Waxing Crescent
11% lit · waxing · day 3 of 29.5
Planting by the moon: New to first quarter: sow leafy crops and anything harvested for its leaves — lettuce, spinach, brassicas, herbs.
Fishing: good — feeding peaks in the days either side of new and full, and around moonrise and moonset.
Turn of the season
Fall equinox
Sep 22 · 7 days away
About 27 days to the average first frost (Oct 11).
Next moons
27 days
Average first fall frost is around Oct 11. Nothing you sow now will finish unless it beats that.
The hard edge of the growing season. Ice inside a leaf ruptures its cells — one night ends a tomato and sweetens a parsnip.
14.5 °C
Good for brassicas, beets, chard, carrots and potatoes. Wait on the heat crops.
Seeds read soil temperature, not the calendar. Six centimetres down is where the decision gets made.
12h 35m
Losing about 3 minutes of daylight a day.
The one thing weather can't change. Plants count photoperiod to decide when to bolt, bulb, flower and go dormant.
Waxing Crescent · 11%
Waxing, 3 days old. Full moon in 11 days. Fishing outlook: good.
It moves water — in the sea, in a lake's edge, and, by long tradition, in the sap of a plant. Fish feed hardest on the days around new and full.
Found near Fargo · September
238 species have been recorded within about 40 km of here in September, from verified public observations. These are the ones we have written up, ordered by how often they turn up.
Dangerous look-alike26 records within 40 km this month

21 records within 40 km this month

Dangerous look-alike12 records within 40 km this month
Dangerous look-alike9 records within 40 km this month

4 records within 40 km this month

3 records within 40 km this month

2 records within 40 km this month

1 record within 40 km this month
Recorded near you this month. We have no identification guidance for these, so treat them as a list of things to go and learn — from a regional key or someone who knows them — not as a list of things to pick.
Fungi
Your woods
The commonest trees recorded nearby, most often seen first. Most of the good mushrooms are tied to a particular tree, so this is the first thing to know about a wood.
Know these first
7 species on our hazard list have been recorded near here this month, 3 of which can kill a healthy adult. Learn these before you learn anything you intend to eat.
Actaea rubra
Menispermum canadense
Lepiota (the whole genus)
Next
Coming into season in the next month or two near Fargo, North Dakota. Seasons shift a week or two with the weather, so treat these as things to keep an eye on rather than dates.
Dryad's Saddle
Cerioporus squamosus
6 records nearby
Plants

common milkweed
Asclepias syriaca
66 records nearby

great mullein
Verbascum thapsus
54 records nearby

stiff-leaved goldenrod
Solidago rigida
39 records nearby

white heath aster
Symphyotrichum ericoides
33 records nearby

leadplant
Amorpha canescens
31 records nearby

dotted gayfeather
Liatris punctata
29 records nearby
Photographs and records from iNaturalist, used under their open licences and credited to their photographers.
Arisaema triphyllum
Solanum dulcamara
Amanita muscaria
Rhamnus cathartica
These are recorded within about 40 km of here in this month, from verified public observations. It is not a complete list of what is dangerous — nothing is — and a species missing from it may still be in your woods. Never eat anything identified from a photograph and a description alone.