Posted: February 10, 2025

Searching for exceptional plants that perform well in south central Pennsylvania? View our 2024 Trial Garden Annual Report with the results of the flower trials conducted by Penn State Master Gardeners of Cumberland County at the Trial and Idea Garden in Carlisle, PA.

Trial Garden, Carlisle, PA

Trial Garden, Carlisle, PA

The chart below summarizes the performance of the 25 cultivars that were included in the evaluation process from June through at least August. For those that were evaluated in September, a second score is listed. For those plants that thrived into September, the score for the June through August period was similar to their score for the June through September period, usually within one percentage point of each other. In some cases, the earlier score is higher, whereas, in other cases, the later score is higher. View the complete 2024 Trial Garden Annual Report

2024 Trial and Idea Garden Consolidated View of Ratings

Summary of plant performance in the 2024 Trial Garden
True Trial Botanical Name Common Name and Cultivar End August
Rating
End September
Rating

 

Agastache aurantiaca

Hyssop 'Betterbuzz Amber'

75

74

tt

Angelonia angustifolia

Angelonia Alonia™ Big Grape

99

98

tt

Angelonia angustifolia

Angelonia Archangel™ Ruby Sangria

87

86

tt

Argyranthemum frutescens

Marguerite Daisy Grandaisy® Dark Pink

93

 

Bidens ferulifolia

Bidens Brazen ™ Red Flare

94

94

tt

Canna x generalis

Canna Lily Cannova® Golden Leopard

90

91

tt

Catharanthus hybrid

Vinca SOIREE® Flamenco Salsa Red

91

90

tt

Celosia spicata

Celosia Kelos® Fire Orange

93

94

tt

Coleus scutellarioides 

Coleus Down Town™ Santa Monica

97

96

tt

Cuphea hyssopifolia

Purple Cuphea 'Mexican Heather'

87

tt

Cuphea procumbens

Cuphea Sweet Talk™ Lavendar Splash

82

tt

Lantana camara

Lantana 'Passionfruit'

95

96

 

Lantana camara

Lantana Bandito™ Orange Sunrise

94

95

 

Lobelia hybrid

Lobelia 'Rift Blue'

97

 

Melampodium paludosum

African Zinnia Jackpot Gold™

96

97

tt

Pelargonium interspecific

Geranium Mojo™ Dark Pink

74

tt

Pelargonium interspecific

Geranium Mojo™ Cranberry Splash

84

tt

Pelargonium zonal

Geranium Presto™ Pink

91

 

Petunia hybrid

Petunia Crazytunia® Frisky Purple

86

tt

Plectranthus scutellarioides

Coleus Talavera™ Moondust Coleus

94

95

tt

Salvia officinalis

Salvia Salgoon® Lake Como

85

87

 

Scaevola hybrid

Scaevola Surdiva® Blue Violet

99*

 

 

Sutera cordata (Bacopa)

South African Phlox Safari® Sky Jamesbrittenia Hybrid

89

 

 

Thunbergia alata

Black-eyed Susan Vine Thunbergia Sunny™ Lemon Star

100

100

 

Verbena bonariensis

Verbena Meteor Shower®

95

 

 * Scaevola Surdiva® Blue Violet was included only in five of the seven evaluations during the summer period of June through August.