388 FRITZ BAHR'S COMMERCIAL FLORICULTURE 



GOLDEN BELL 



See Forsythia 



GOLDEN FEATHER 



See Pyrethrum 



GOLDEN GLOW 



See Rudbeckia 



GOMPHRENA (GLOBE AMARANTH) 



This is a pretty annual that can be used the same as the Heli- 

 chrysums and other Everlastings. Its blossoms, similar in shape to 

 Clover heads, come from pure white to a deep red and the plants 

 are covered all Summer with a mass of bloom. You should recom- 

 mend them for the old-fashioned flower border and grow on a nice 

 lot of plants for your Spring trade. Sow seed and treat the same 

 as you would Asters, Zinnias, or Marigolds. 



GRAPE HYACINTH 



See Muscari 



GREVILLEA ROBUSTA 



Grevillea robusta, or Silk Oak, 

 is a plant which, though as 

 old as the hills, is not as yet 

 nearly enough appreciated by 

 the retail grower, despite its 

 great usefulness and easy cul- 

 ture. Besides that, it can be 

 grown in a temperature of 45 

 to 48 deg. over Winter; that 

 is, it can get along under such 

 conditions without showing 

 bad effects. 



When you fill window boxes 

 and vases during the months 

 of May and June and have 

 the Vincas or Ivies along the 

 edge with perhaps Geraniums, 

 Heliotropes and Coleus as the 

 central feature, you are in 

 need of something light, feath- 

 ery and graceful, to overcome 

 the formal appearance. That 

 is the time you will appreciate 



Fig. 172. GREVILLEA ROBUSTA, OR SILK 

 OAK. Sow seed in July or August^ grow on 

 in a 50-deg. house and you can 'by May 

 have 12-in. plants in 3^4-in. pots. They 

 can take the place of Bostons and will 

 stand anything a Geranium or Vinca will 



