Colorado guides
Everything here is built from Colorado's own records: 59 native plants, 24 birds and 4 dark-sky places, and the timing that goes with them. The free Colorado pages stay free; these are the printable editions.
Colorado Nature Year 2027
Everything Birch Compass knows about a year of nature in one state: the book, the posters, the sky calendar, the life list, and a weekly note through 2027.
- 66 pages book
- 11 files
- weekly Colorado note
$34.00
The Colorado Nature Journal
Twelve printable month pages: a reference side built from public nature data for your state, and a field-notes side that is yours.
- 15 pages
- twelve month pages
- printable PDF
$14.00
Birds of Colorado
The state's most-recorded birds, ranked from survey data, with when each is present through the year and a life list to keep.
- 6 pages
- 24 species
- printable PDF
Not on sale yet
Native Plants of Colorado
The native plants that belong in your yard: what to plant for pollinators, by zone, with bloom timing and a species table.
- 10 pages
- 59 species
- printable PDF
$9.99
The Night Sky over Colorado
A stargazing companion for the state that does not expire: the meteor calendar, the darkest places, and how to read any year's sky.
- 8 pages
- 4 dark-sky places
- printable PDF
$9.99
Colorado Planting Windows 2027
When to start seeds indoors, set out transplants, and direct-sow in Colorado: computed week by week for every zone the state spans, dated for 2027.
- 20 pages
- printable PDF
$7.00
Not sure yet? The free Colorado pages cover this month on screen, and every edition here is the year around them.
Format: PDF, laid out for Letter and A4. Delivery: an instant download link, plus a link you can re-open for 72 hours. Refunds: full refund within 30 days, no questions; email hello@birchcompass.com.
Two at a time
Buying more than one Colorado edition
Each Colorado edition is sold on its own, and checkout takes one at a time. These two combine them into a single purchase, for less than the parts come to.
The Colorado Set
Three printable Colorado editions in one purchase (the twelve-month journal, the native plants reference and the stargazing guide) for less than the three cost apart.
The Colorado Nature Journal, Native Plants of Colorado and The Night Sky over Colorado
$29.00 $33.98 apart
Colorado Nature Year 2027 + Journal
The complete Colorado Nature Year with the undated journal beside it: everything the site knows about the year, and the pages to record your own.
Colorado Nature Year 2027 and The Colorado Nature Journal
$42.00 $48.00 apart
Choosing
Which Colorado edition do you want?
- If you want one thing that covers the whole Colorado year
- The Nature Year is the book plus the posters, the sky calendar, the life list and a weekly note: everything the site knows about Colorado in one purchase, which is why it costs what the others cost together.
- If you want to keep your own record
- The journal gives each month a reference side built from Colorado data and a blank side that stays yours. Undated, so you print it again next year.
- If the birds are the reason you go outside
- The birding guide profiles the 24 species most consistently recorded in Colorado, with a month-by-month presence chart and a life list.
- If you are planting something this year
- The native plants guide covers 59 species for hardiness zones 3a–6b, with bloom windows and what each one feeds.
- If you would drive somewhere dark
- The night sky guide names Colorado's 4 darkest places and works the moon into every meteor peak, so you know which nights repay the trip.