Colored Glass For Rooting Begonias

A short time ago a box of begonia cuttings was sent to me. Instead of placing them in sand which is the usual custom, I believe, I placed each cutting individually in a small clear glass. Not having enough glasses at hand that moment, a small very dark green glass was used for the two remaining cuttings. A small amount of rain water was poured in each glass and all were placed in an east window.

Two days later, I was greatly surprised to note the cuttings in the dark green glass had rooted. However, not much thought was given to this, thinking perhaps it might be the specie or manner of cut that made this rapid root growth.

Several days later, another box of begonia cuttings was received. Instead of using clear glass, I decided to try only colored. This decision made me resort to the attic, the cellar and forgotten nooks; the result was quite an array of sugar bowls, pitchers, vases, salt chokers, measuring cups and two bromo seltzer bottles. Each was a different color, the bromo bottles being a dark blue, as you know.

Again each cutting was placed individually in rain water and all were placed in the same east window. Within a few days the cuttings in the bromo bottles were rooted and then several days later all those in the rest- of the colored glasses showed roots or signs of rooting. It was several weeks later before the first lot of cuttings which were in the clear glass rooted.

The experiment showed that those in the darkest ‘glasses rooted first then those in the lighter colored glasses and the clear glass rooted last of all. Light rays apparently enter .into the factor. Lam curious to know the why of this and also if this rapid rooting is good for the plant? Can’t you recall our grandmothers always having a colored glass battle for their ivy cuttings? So, perhaps there might be a good reason for all this. Have any of you readers had this experience. If so, what is your thought regarding it?

A search is being made in our public library, also the splendid horticulture library at our Garden Center, likewise a few other sources, and when I gather more data, you will hear from me again.

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