Gardenia jasminoides ‘Frostproof’

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USDA Hardiness zone: Zn7b 10º to 5ºF

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Gardenia jasminoides ‘Frostproof’

Good looking, hardy, long lived shrub that we love. We’ve grown many “hardy” gardenias and many failed but this one is a bona fide success. Easy to grow shrub that blooms and thrives with correct care and its perfectly hardy to cold. To 3′ x 3′ in 5 years in rich, well drained, moisture retentive soil. Fully double 3″ wide powerfully fragrant sweetly scented flowers appear in PDX from July to October. Slow but steady growing shrub.  Never let newly installed plants dry out completely and pay special attention to irrigation in spring before our first heat wave. Dry plants will abort interior leaves. If spring rains fail make sure to irrigate this Gardenia in April/May. Once established it requires the same water and care as a Kerume Azalea (Evergreen Azalea). Add a handful of organic fertilizer or cottonseed meal in early June prior to flowering. Cold hardy in our climate to 5ºF and has naturally low heat requirements to bloom. Handsome evergreen shrub that is long lived and a good selection for a permanent shrub. We recommend ‘Frostproof’ for part shade as its flowers will last longer when not fried by hot sun. Excellent year round performance in a container and surprisingly cold tolerant. Water containers regularly and apply a handful of all organic fertilizer in the spring. Protect from the blastiest sites.


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