Allium, 350
Allium schubertii, 29
allwood pink, 197
‘Alpha’ phlox, 95, 114
alpine columbine, 100, 159
Althaea zebrina, 271
American May apple, 292
amethyst sea holly, 208
Amsonia, 347, 350, 351, 354,
357 , 359, 361, 362, 363,
366, 372, 373, 37 5
cutting back and shaping,
112, 38 7
popularity of, 154
Amsonia ciliata, 153
Amsonia elliptica, 112, 154
Amsonia hubrichtii, 153, 154
Amsonia tabernaemontana,
111, 153 , 154
‘Blue Ice’, 153
‘Short Stack’, 153
Anaphalis, 64, 155
Anaphalis margaritacea, 155
Anaphalis triplinervis, 154 ,
34 9, 353, 358, 359, 367,
371, 372, 373, 37 5
‘Sommerschnee’, 153, 155
Anchusa azurea, 155 , 346,
348, 351, 352, 356, 359,
361, 362, 367, 372, 373,
375
ʻDropmore’, 155, 156
‘Little John’, 156
‘Loddon Royalist’, 155, 156
Andropogon gerardii, 345
Anemone ×hybrida, 156 , 348,
34 9, 355, 358, 375, 377
black blister beetle as pest
of, 70–71
‘Bressingham Glow’, 156,
157
‘Honorine Jobert’, 157
planting time, 4 7
‘Queen Charlotte’, 156
‘September Charm’, 157
Anemone pulsatilla, 103, 157 ,
34 7, 355, 363, 372, 375
Anemone tomentosa
‘Robustissima’, 157
Angelica, 350
Angelica archangelica, 158
Angelica gigas, 158 , 359, 361,
362, 371, 372, 373, 37 5
‘Angelina’ stonecrop, 310
animal pests, 72–73
anise hyssop, 65, 149
‘Blue Fortune’, 149
anise sage, 305
Anisocampium niponicum
‘Pictum’, 65, 211, 212
Antennaria, 64
Anthemis tinctoria, 193
antolina, 43
aphids, 72, 384
Apiaceae, 65, 158, 173, 207,
214
Apocynaceae, 153, 168
April maintenance, 382
Aquilegia alpina, 100, 159
aquilegia / Aquilegia, 98,
350 , 387
Biedermeier Group, 159
Aquilegia canadensis, 159
Aquilegia flabellata, 159
Aquilegia hybrids, 158 , 348,
34 9, 351, 355, 356, 359,
361, 362, 366, 367, 370,
371, 372, 373, 37 5
McKana Group, 159
Aquilegia vulgaris, 159
Araceae, 160
archangel, 158
arisaema / Arisaema, 160,
34 7, 357, 363, 369
Arisaema ringens, 160
Arisaema sikokianum, 160
Arisaema triphyllum, 160 ,
363
Aristolochiaceae, 167
Arkansas bluestar, 154
Armenian cranesbill, 222
Armeria maritima, 160 , 344,
348, 353, 356, 358, 360,
37 0, 372, 373, 375
aromatic aster, 323–324
Artemisia abrotanum, 161 ,
34 7, 366
Artemisia absinthium
‘Lambrook Silver’, 49, 162 ,
348, 357, 366
Artemisia lactiflora, 163 , 347,
351, 353, 357, 367
Guizhou Group, 163
Artemisia ludoviciana
‘Silver King’, 162, 163 , 346,
352, 357, 377
‘Silver Queen’, 164
‘Valerie Finnis’, 164
artemisias / Artemisia, 344,
350 , 358, 359, 365, 368,
369, 372, 373, 37 5
deadheading, 104
‘Lambrook Silver’, 162
pinching / cutting back,
123
‘Powis Castle’, 164 , 348,
366, 371‘Silverado’, 165
Artemisia schmidtiana ‘Nana’,
111, 116, 165 , 346, 366
Artemisia stelleriana, 64
‘Silver Brocade’, 64, 65, 162
Arum italicum ‘Pictum’, 130,
166 , 354, 357, 363, 371,
372, 373, 37 5
Aruncus, 80
Aruncus aethusifolius, 167
Aruncus dioicus, 166 , 343, 347,
350 , 355, 357, 358, 359,
369, 370, 371, 375, 377
Asarum, 134
Asarum canadense, 167
Asarum europaeum, 127, 167 ,
34 7, 354, 363, 371, 372,
373
Asclepias, 80
Asclepias spp., 64
Asclepias syriaca, 345
Asclepias tuberosa, 168 , 344,
34 7, 350, 355, 356, 359,
361, 362, 372, 373, 37 5
deadheading, 103
soil pH for, 32
Asian May apples, 292
Asparagaceae, 244, 263, 294
Asteraceae, 170, 325
Aster ×frikartii
‘Mönch’, 132, 169 , 348, 352,
356, 363, 372, 375, 382
‘Wonder of Staffa’, 169
Aster novae-angliae, 322
Asteromoea incisa, 170
Asteromoea mongolica, 170
asters / Aster, 350, 359, 368,
369, 373
black blister beetles as
pest of, 71
cutting back, 117, 388
in a mixed planting, 45
Aster tataricus, 170
‘Jindai’, 117, 170 , 347, 353,
363, 365, 372
Aster tongolensis, 169
‘Wartburgstern’, 169
Astilbe ×arendsii, 171 , 352,
357 , 359, 363, 369, 370,
371, 372, 373, 37 5
‘Hyazinth’, 171, 172
Astilbe biternata, 172
Astilbe chinensis, 172
‘Pumila’, 172
Astilbe japonica, 171
astilbes / Astilbe, 50, 55, 81,
104, 171, 172, 350
Astilbe simplicifolia ‘William
Buchanan’, 172