I'm someone just getting interested in the concept of 'cottage gardening' because of its emphases on what my 'yard' is becoming (fruit; flowers; & vegetables all together, small size, coziness, & beauty) - instead of yet more huge rich folks' estates - and Englishness of course...
I've been doing tons of reading this winter, esp. on garden & variety history/heirlooms & CGs.
See reviews of many on amazon (.co.uk; better than .com because it'll have British reviews first), but beware that the quality and literacy of 'reviews' there has decreased alarmingly since the rise of the I-phone, facebook, etc. (you don't say; like the rest of civilization), to the extent that many don't even seem to realize it's a book review and not a 'seller rating' or complaint form ... so 'sort them by date then start at the oldest (and buy from a better business than amazon if you at all can).
Another method is look on ebay (and .co.uk) since sometimes sellers of a title have photos of the book that might show contents, index, etc.
Sometimes archive.org also will have preview pages of books that can be 'borrowed as daisy' (which I know nothing about).
Sometimes you know nothing of a book by title and author and that's enough to take a chance!
Of course if you live in a city (I am far from) there's the Library & interlibrary loan! (three cheers for Libraries & Librarians!!!)
Some books of course have other editions (US or UK, SC/HC, etc.). You can meta-search many sellers of used books on bookfinder com (also like ABE owned by amazon) or adall com.
One more thing; I'm not including books here that I've only read as scanned/archive copies so far, but there's TONS there especially pre-1930s, so all yer Gertrude Jekyll, William Robinson, JC Loudon, etc. University of California scans are often the best by the way, and .djvu usually better & smaller than .pdf
(I have hard copies on order of some of these after seeing the scans...)
FINALLY! Below are my favo(u)rites so far in appx. order of appeal (data from my BookCat file - I'm a bibliophile also).
Title: English cottage gardens
Author: Hyams, Edward, 1910-1975; Smith, Edwin (Photographs)
Publish year: 1970
Pages: 234
Publisher: Nelson
Publisher place: London, England
ISBN: 0171430212
LOC Cat #
72543760
(great photos, excellent writing; history & societal context of English GSs)
Title: Cottage Gardens: Geoff Hamilton's Cottage Gardens
Author: Hamilton, Geoff
Publish year: January-05-95
Pages: 256
Publisher: BBC Books
Publisher place: London, England
ISBN: 056336985x
(accompanies the BBC TV series from same time; good DIY plans, friendly style, good pix. Download all 6 of the TV episodes on archive.org: vid-20220729-085946 )
Title: The Cottage Garden
Author: Lloyd, Christopher; Bird, Richard
Publish year: 1990
Pages: 192
Publisher: Prentice-Hall
Publisher place: New York, etc.
ISBN: 0131812319
(loads of great English CG photos, opinions & observations by the great gardening guru)
Title: Grandmother's garden - The Old-Fashioned American Garden 1865-1915
Author: Hill, May Brawley
Publish year: 1995
Pages: 240
Publisher: Abrams
Publisher place: New York, NY
ISBN: 0810933896
(The first serious study of traditional American perennial gardens, which attained great popularity in the years between the Civil War and World War I, this abundantly illustrated volume explores this old-fashioned garden style--frequently referred to as "grandmother's garden"--as seen in small towns, artists' colonies and craft villages, mining towns, and settlements on the Western frontier. 159 illustrations, 75 in color.)
Title: Creating a Cottage Garden
Author: Phillips, Sue; Perry, Clay (Photographs)
Publish year: 1990
Pages: 113
Publisher: Grove Weidenfeld
Publisher place: New York, NY
ISBN: 080211248x
Title: Midwest Cottage Gardening
Author: Manos, Frances
Publish year: 2004
Pages: 220
Publisher: Trails Books
Publisher place: Black Earth, WI
ISBN: 1931599408
(great writing & adaptation to suburban Chicago city lot; emphasis on adaptation with regional natives & non-natives to get a CG without making the mistake of trying to copy what works in England)
Title: The Cottage Garden
Author: Scott-James, Anne
Publish year: 1981
Pages: 160
Publisher: Allen Lane
Publisher place: London, England
ISBN: 0713912634
(history & evolution of GCs)
Title: Creating a Cottage Garden
Author: Phillips, Sue; Perry, Clay (Photographs)
Publish year: 1990
Pages: 113
Publisher: Grove Weidenfeld
Publisher place: New York, NY
ISBN: 080211248x
Title: Plants from the Past - old flowers for new gardens
Author: Stuart, David C.; Sutherland, James
Publish year: February-01-88
Pages: 256
Publisher: Viking
Publisher place: Harmondsworth, Middlesex, England
ISBN: 0670808520
Title: Furnishing the Old-Fashioned Garden: Three Centuries of American Summerhouses, Dovecotes, Pergolas, Privies, Fences & Birdhouses
Author: Hill, May Brawley
Publish year: 1998
Pages: 160
Publisher: Harry N. Abrams, Inc.
Publisher place: New York, NY
ISBN: 0810933357
(Introduction -- Ornaments and Necessities in Colonial Gardens -- The New Republic, 1780-1810 -- Arcadian Visions, 1810-1840 -- Picturesque Gardens and Rustic Seats, 1840-1870 -- Domestic Nostalgia and Suburban Comfort, 1870-1900 -- Arts and Crafts and the Colonial Revival, 1900-1930 -- Bauhaus and the Home Garden, 1930-1960 -- Looking Back, The Recent Past -- Noted -- Bibliography -- Index)
Title: Cottage Garden
Author: Arter, Elizabeth
Publish year: January-01-93
Pages: 64
Publisher: Canopy Books
Publisher place: New York, etc.
ISBN: 1558595473
(small book, great ideas & pix)
Title: The Country house kitchen garden 1600-1950
Author: Wilson, C. Anne (Editor)
Publish year: 2003
Pages: 182
Publisher: Sutton Pub Ltd
Publisher place: Phoenix Mill, Far Thrupp, Stroud, Gloucestershire
ISBN: 0750934298
(less cottage than manor, but of interest for plants. Keywords: Cooking, British; Garden Design; Gardening; English Landscape; Country life--Great Britain; Cooking & food)
Author: Kightly, Charles
Title: Country voices - life and lore in farm and village
Publisher place: London, England
Publisher
Thames & Hudson
Publish year: 1984
Pages: 240
ISBN: 0500013144
(Keywords Country life - England; Villages - England; England; English Landscape; UK & Great Britain)
Title: English cottages and farmhouses
Author: Cook, Olive; Smith, Edwin (Photographs)
Publish year: 1982
Pages: 208
Publisher: Thames and Hudson
Publisher place: New York, NY
ISBN: 0500241147
(not CG per se, but photos of many. Same photographer as Hyams' book, above; noted author is also Photographer's wife)
Title: The kitchen garden
Author: Lyte, Charles
Publish year: January-01-84
Pages: 214
Publisher: Oxford Illustrated Press
Publisher place: Sparkford, Yeovil, Somerset, England
ISBN: 0946609039
Title: Paradise lost - Paintings of English Country Life and Landscape 1850-1914
Author: Wood, Christopher
Publish year: 1989
Pages: 223
Publisher: Trafalgar Square
Publisher place: North Pomfret, Vt
ISBN: 0943955106
Title: English cottages
Author: Evans, Tony (Photographs); Green, Candida Lycett (Text); Betjeman, John (Introduction)
Publish year: 1982
Pages: 160
Publisher: Weidenfeld & Nicolson
Publisher place: London, England
ISBN: 0297781162
(another with similar appeal as the above)
Title: The Findhorn Garden - Pioneering a New Vision of Man and Nature in Cooperation
Author: Findhorn Community (Corporate author)
Publish year: 1976
Pages: 192
Publisher: Harper Colophon
Publisher place: New York, etc.
ISBN: 0060905204
(Members of the Scottish agricultural community present the history and philosophy of their extraordinary gardens; not quite GC but definitely emphasizes variety & full gardening'.)
Shoot, almost forgot: Anything about soviet & post-soviet & E. Euro dacha gardening and European 'allotment gardens', esp. Finnish & Swedish is pretty much 101% cottage garden too .. Even though for someone who spent years in the xussr (and been to many dachas in Ukraine, Rep. of Georgia, Lithuania, belarus, & russia .. even the ussr) it's hard to remember /anything/ good about russia in these days of fascism and genocidal war - but UKRAINE has dachas too and there was culture in Germany before hitler and it eventually returned after hitlerism was destroyed. Let's hope.
Title: Summer Kitchens - Recipes and Reminiscences from Every Corner of Ukraine
Author: Hercules, Olia
Publish year: 2020
Pages: 352
Publisher: Weldon Owen
Publisher place: Richmond, CA
ISBN: 9781681885704
(EXCELLENT! & though more of a cook/food book, emphasizes the Ukrainian outdoor summer kitchens, culture, & produce)
Title: Summerfolk - a history of the dacha, 1710-2000
Author: Lovell, Stephen
Publish year: 2003
Pages: 260
Publisher: Cornell University Press
Publisher place: Ithaca, New York
ISBN: 9780801440717
Caldwell, Melissa (2011).
Dacha Idylls: Living Organically in Russia's Countryside.
Berkeley: University of California Press.
(ignore that empty bit below; accidentally replied to myself instead of editing...)