Hoya seeds, germination test

Almost all Hoya seed species have excellent germination rates when, not long after collect, they are put in closed bags between layers of humid paper. On average these seeds will sprout between the third and the seventh day in the humid bag. After sprouting more days in the bag are needed before exposition to indirect light. Depending on the species the seedlings will more or less elongate. After 3 weeks in the bags some seedlings are still very small, others will have elongated by 1 cm.

 The information below shows that when Hoya seeds are not grown shortly after collect their germination rate decreases fast, to the point that they may never germinate. The information from left to right reads:

1 : Hoya NAME
2 : date of COLLECT
3 : date of SOWING
4 : number of days between Harvest and Sowing
5 : number of seeds SOWN
6 : number of seeds SPROUTED
7 : % of germinated seeds

Last update : April 2015

HOYA AL5 2-Apr 4-Apr  2 21 21 100%
HOYA AL5 8-Dec 10-Dec 2 12 2 17%
HOYA AL5 11-Dec 15-Dec 4 14 14 0%
HOYA AMBON 12-Dec 28-Dec 16 25 0 0%
HOYA ANDALENSIS 12-Oct 30-Oct 18 80 14 18%
HOYA BORDENII 20-Nov 12-Dec 22 27 0 0%
HOYA BREVIALATA 20-Oct 7-Nov 17 45 6 13%
HOYA BURTONIAE 26-Dec 27-Dec 2 9 7 75%
HOYA CALLISTOPHYLLA 11-Oct 30-Oct 19 100 87 87%
HOYA CAMPHORIFOLIA 25-Dec 30-Dec 5 12 10 75%
HOYA CARNOSA PINK 5-Oct 15-Oct 10 40 27 67%
HOYA CHUNII 13-Nov 13-Dec 30 30 0 0%
HOYA CHUNII 3-Sep 19-Sep 16 12 5 42%
HOYA CHUNII 28-Sep 28-Sep 0 50 16 32%
HOYA CHUNII 10-Oct 30-Oct 20 110 13 12%
HOYA CLANDESTINA 24-Sep 26-Sep 2 10 10 100%
HOYA CLANDESTINA 15-Dec 8-Jan 23 50 13 26%
HOYA DENSIFOLIA DARK 13-Nov 22-Nov 9 35 0 0%
HOYA DEYKEI 27-Sep 28-Sep 1 50 50 100%
HOYA DEYKEI 20-Aug 22-Sep 32 11 0 0%
HOYA DEYKEI 19-Aug 7-Sep 18 50 43 86%
HOYA ERYTHRINA 3-Sep 17-Sep 14 12 5 42%
HOYA FINLAYSONII 28-Sep 28-Sep 0 20 20 100%
HOYA FINLAYSONII 10-Sep 30-Sep 20 20 0 0%
HOYA FINLAYSONII IV 20-Aug 22-Sep 32 50 0 0%
HOYA FINLAYSONII IV 18-Aug 26-Aug 8 10 10 100%
HOYA FINLAYSONII IV 21-Aug 27-Aug 6 10 10 100%
HOYA FINLAYSONII VI 20-Aug 22-Sep 32 50 2 4%
HOYA FINLAYSONII VI 18-Aug 26-Aug 8 10 10 100%
HOYA FINLAYSONII VI 21-Aug 27-Aug 6 10 9 90%
HOYA FINLAYSONII VII 21-Aug 22-Sep 31 50 0 0%
HOYA FITCHII 29-Aug 17-Sep 18 10 0 0%
HOYA HUESCHELIANA PINK 8 Jan 15 Jan 7 30 2 7 %
HOYA INCRASSATA 28-Sep 28-Sep 0 50 50 100%
HOYA INCRASSATA VAR. 16-Sep 6-Nov 50 100 51 51%
HOYA INCRASSATA VAR. 17-Sep 6-Nov 49 70 39 56%
HOYA INCRASSATA VAR. 17-Sep 6-Nov 49 80 44 55%
HOYA INCRASSATA MARG. VAR. 28-Sep 28-Sep 0 50 50 100%
HOYA INCRASSATA MARG. VAR. 20-Oct 7-Nov 17 75 13 17%
HOYA INCRASSATA MARG. VAR. 20-Oct 7-Nov 17 75 11 15%
HOYA KENTIANA 10-Oct 30-Oct 20 60 3 5%
HOYA LACUNOSA ESKIMO 25-Dec-27-Dec 2 13 0 0%
HOYA LACUNOSA X OBSCURA 30-Dec-3-Jan 12 12 12 100%
HOYA LACUNOSA SPLASH 25-Dec-27-Dec 2 15 15 100%
HOYA LATIFOLIA 18-Dec 27-Dec  9 100 18 18%
HOYA LOBBII BLACK II 28-May 8-Jun 10 30 10 33%
HOYA SP LATA ISKANDAR 16-Dec 12-Jan 26 25 0 0%
HOYA MAGNIFICA 12-Dec 28-Dec 16 13 0 0%
HOYA MEMORIA 13-Jan 27-Jan 14 17 0 0%
HOYA MERILLII AFF 25-Dec 8-Jan 13 30 0 0%
HOYA MINDORENSIS PHILIPPINA 11-Oct 14-Oct 3 57 52 96%
HOYA MINDORENSIS PINK 5-Jan 10-Jan 5 15 3 20%
HOYA MONTANA 30-Dec 30-Dec 0 12 9 75%
HOYA MULTIFLORA 13-Dec 22-Dec 9 50 0 0%
HOYA MULTIFLORA PHILIPPINA 11-Oct 14-Oct 3 61 52 0 85%
HOYA NEO EBUDICA 13-Dec 28-Dec 15 50 17 34%
HOYA NUMMULARIOIDES 8-Jan 15-Jan 7 12 12 100%
HOYA NOELLE 26-Nov 27-Nov 1 12 12 100%
HOYA OBSCURA 13-Dec 25-Dec 12 45 13 29%
HOYA ODORATA 6-Dec 18-Dec 12 45 0 0%
HOYA PACHYCLADA 15-Aug 17-Sep 32 12 10 83%
HOYA PACHYCLADA RED 12-Nov 7-Dec 25 12 0 0%
HOYA PADANGENSIS 8-Jan 15-Jan 7 12 0 0%
HOYA PALLILIMBA 20-Oct 7-Nov 17 20 0 0%
HOYA PARASITICA X PACHYCLADA 21-Aug 5-Sep 14 115 10 9%
HOYA PARASITICA X PACHYCLADA 10-Aug 15-Sep 35 50 0 0%
HOYA PARASITICA X PACHYCLADA 21-Aug 27-Aug 6 10 10 100%
HOYA PARASITICA X PACHYCLADA 12-Oct 30-Oct 18 120 78 65%
HOYA PARVIFOLIA 25-Nov 13-Dec 18 70 0 0%
HOYA PATELLA PINK 15-Jan 28-Jan 13 15 2 13%
HOYA PSEUDOLITTORALIS 5-Dec 28-Dec 23 50 0 0%
HOYA QUINQUENERVIA 9-Oct 30-Oct 21 90 0 0%
HOYA RETUSA 8-Jan 15-Jan 7 12 0 0%
HOYA ROSARIOAE 13-Oct 30-Oct 17 50 17 34%
HOYA SULAWESII 30-Aug 17-Sep 17 20 0 0%
HOYA SULAWESII 21-Sep 26-Sep 5 50 12 24%
HOYA SULAWESII 10-Oct 19-Oct 9 10 10 100%
HOYA SULAWESII 12-Oct 30-Oct 18 70 16 23%
HOYA SULAWESII 9-Oct 30-Oct 21 70 4 6%
HOYA SULAWESII 13-Oct 30-Oct 17 70 31 44%
HOYA SULAWESII 29-Oct 7-Nov 8 30 18 60%
HOYA TOMATAENSIS 15-Dec 27-Dec 12 25 13 52%
HOYA TSANGII 24-Sep 26-Sep 2 40 40 100%
HOYA VIOLA 8-Jan 15-Jan 7 50 1 2%
HOYA VITELLINOIDES 23-Aug 22-Sep 29 50 0 0%