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Growing results and crops · GR-12

Fruit Blossom Stage and Frost Record

A free printable blossom and frost record: the date each variety reached each bud stage, readings on cold nights, and blossoms cut open to count frost damage.

First page of the Fruit Blossom Stage and Frost Record — Judge frost risk and losses on your own trees, at the stage they have actually reached. Each cold night and the damage check after it sit on the same page.
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2 pages. Choose your paper size — both versions are laid out identically, so neither one gets shrunk to fit.

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What this sheet is for

Judge frost risk and losses on your own trees, at the stage they have actually reached. Each cold night and the damage check after it sit on the same page.

Who it is for

Fruit growers, orchard keepers and allotment holders with apples, pears, plums or cherries.

How to use it

  1. Walk the trees every few days from bud swell and write the date each stage is first seen.
  2. Copy the critical temperatures for each stage from your advisory service's table.
  3. On every night a frost is forecast, take your own readings at blossom height and note any protection used.
  4. A few days after a frost, cut blossoms across and count the dark centres.
  5. Later, note what each variety actually cropped.

What is on the sheet

2 pages, in this order:

Page 1

Printed under the title: The date each variety reached each bud stage, your own readings on every cold night, and the blossoms cut open afterwards, so frost risk and losses are judged on your own trees.

Your stage, your readings, their table. How much cold a blossom survives depends on the fruit, the variety and the stage it has reached. No critical temperatures are printed: copy them from the table your advisory service publishes, and take readings on your own site at blossom height, not from a distant weather station.

Write-on lines: Orchard or garden · Season · Thermometer, and where it hangs · Critical temperature table used · Recorded by

Bud stages — the date each stage was first seen; for stone fruit, cross out and write your own

Also printed: Date first seen · Variety · Tree or row · Bud swell · Green tip · Tight · cluster · First · colour · bloom · Full · Petal fall · Fruit set

Page 2

Cold nights — every night a frost is forecast while buds are showing

Also printed: Date · Forecast · low · Lowest · Where taken · Wet bulb · Dew · point · Stage · Critical · Protection · Wind, sky · night of · as forecast · your reading · block, height · if measured · most advanced · your table · fans, covers, none · calm, clear

Damage check — a few days after a frost, cut blossoms across and count dark centres

Also printed: Date · Variety · Frost of · Cut open · Dead · % dead · Fruit set later · Notes · night's date · blossoms · dark centres · dead ÷ cut × 100 · what cropped

Questions

Why are no critical temperatures printed?

Because they differ by fruit, variety and stage, and advisory tables are revised. Copy the current figures from the table your advisory service publishes and write which table you used at the top of the sheet.

Why take my own readings?

Cold air settles in hollows and low spots, so a weather station a few miles away can read very differently from your trees. A thermometer at blossom height on your own site gives the reading the damage check should be compared with.

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