Is the Hot Water Method Used for Hydrangeas Also Useful for Other Flowers?

Woody-Stemmed Flowers

• Flowers growing on woody stems can benefit from using the hot water method. Woody stems are dense, making it difficult for the stem to uptake adequate water to feed the foliage and flower. Very hot water is easily and rapidly absorbed up woody stems, hydrating the flower fully. Lilacs, flowering branches, dahlias, chrysanthemums and roses benefit from using the hot water method.

Wilted Flowers

• Using the hot water method for cut flowers that begin to wilt can revive the foliage, flowers and stems. The same principle applies as for woody-stemmed flowers. Wilting flowers are not getting enough nutrients or water to survive. By recutting the bottom of the wilted flower stem, then immediately placing the stem into hot water for one hour, the wilted cut flower can rehydrate. Wilted roses can perk up in as soon as 20 minutes by using the hot water method and holding the rose head erect until the rose can hold up its head on its own.

Considerations

• Most flowers you grow in your garden can have their vase life extended by using lukewarm to slightly hot water as you harvest the flowers. Solid-stemmed flowers that are not woody, such as daisies, zinnias and astilbe, will be completely hydrated after cutting if the container you take with you into the garden is filled with lukewarm to slightly hot water. Place the fresh-cut stems into the hot water as soon as you harvest them. By the time you are ready to create your bouquet or arrangement, the flowers will be completely full of water and will stay fresh longer.

When Not to Use the Hot Water Method

• Some fresh-cut flowers do not benefit from the hot water method. Generally, flowers grown from bulbs, like daffodils, tulips, gladiolus and allium, should not be placed in warm or hot water after cutting; instead, use cool water to hydrate them satisfactorily. Hollow-stemmed flowers absorb water efficiently on their own and should not be exposed to the hot water method; the hot water can damage the stems.