South Tucson, AZ (Zone 8A)
Answer from NGA
April 29, 2005
|Is the sprout originating below the bud union (a raised bump near the base of the plant where the rootstock and variety are grafted)? Sometimes the rootstock (which is a different variety than the flower itself) will send up these tall, fast-growing shoots. They should be pruned off. If it's a regular cane above the bud union, these long canes are usually trained to grow horizontally to produce more flowering.
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