Hi everyone- I am new to this forum but I have had the exact same question about sugar formulas. > 32% was averaged as 32% >35% was averaged as 35% Note: * indicates that Greater Than (>) values were used in computing the average. Mexican Cigar: Cuphea micropetala 27.1 29.6 28.1 6 SultanÂs Turban: Malvaviscus drummondii 16.0 >32 *22.2 7Ĭhinese Lantern, Orange variety: Abutilon pictum 14.9 26.0 21.7 23Ĭhinese Lantern, Pink variety: Abutilon pictum 19.5 40.1 *29.4 6Ĭigar Plant: Cuphea ignea "David Verity" 24.6 28.0 26.8 6 Giant Turks Cap: Malvaviscus pendulaflora 17.0 24.6 20.5 14 Summer-blooming Shrimp plant: Justicia brandegeana 23.5 >35 *29.7 11 Winter-blooming Shrimp plant: Justicia sp. Van Houttii Salvia: Salvia splendens 18.6 28.6 22.3 16 Red Hot Sally Salvia: Salvia splendens 16.5 18.9 17.6 4 Lady in Red Salvia: Salvia coccinea 30.4 38.7 33.2 3 Mexican Bush Sage, "Waverly" Salvia leucantha 26.6 29.0 27.7 4īelize Sage: Salvia miniata 21.8 >32 *27.1 7 Mexican Bush Sage: Salvia leucantha 27.2 >32 *31.2 10 Orange Mountain Sage: Salvia regla 26.6 >35 *32.0 11 Remsens Sage: Salvia guaranitica hybrid 22.8 35.8 *29.1 24 % sugar Average % sugar Number of Samplesįorsythia Sage: Salvia madrensis 28.2 33.6 *31.4 16Īnise Salvia: Salvia guaranitica 20.0 33.5 29.0 23 Sugar concentrations for selected plants, May 2001-November 2002 The higher percentage may be preferred by birds but the number of total visits to a feeder may be higher with the lower percentage. The 3rd number is the average percentage. Here's some data from the Lousiana Ornithological Society Newsletter, March 2003, written by Dennis Demcheck. Both the 1:3 and 1:4 ratios are within the range of naturally occurring concentrations in flowering plants. Black mold will happen if a feeder has been neglected even more and it will kill the birds more quickly than spoiled nectar will.You're fine. You can't rely on cloudiness to tell you it's time to change it. ![]() If you don't keep the nectar fresh it will ferment. Work on maintaining the cleaner after cleaning it by changing the nectar regularly and deep cleaning it once a month. Alternatively, you can use diluted bleach but it is very important to remove all bleach residue before refilling the feeder. ![]() However, in the event you see black mold, you will need to soak with vinegar and peroxide for a longer time - until the residue has been destroyed. If your feeder can't be boiled then you will need to use mild cleaners such as white vinegar or peroxide more often. Rinse the feeder after boiling because some sugar liquid will remain in the water used to boil. For regular cleanings, you can boil your feeders in a pot of water if they can handle that without deforming. Rinse the feeder with hot water each time it is filled. A hummingbird feeder should be cleaned regularly to make sure it's safe for birds.
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