Hi,

I can't be certain what you are growing, there are so many different habitats for the various Gladiolus species. However, Richard Doutt (in the book "Cape Bulbs") quotes a gardener at Kirstenbosch garden in South Africa. The gardener reported that many Gladiolus species respond well to regular applications of liquid fertilizer. So, I guess you can fertilize them.

The trickiest part for me is getting seedling bulbs through their first dormancy. I don't actually let them go dormant. Instead, I bring them into the house and put them under lights if I have the room. I give them the same amount of light as for cactus seedlings. That means 4 bulbs, 4-foot long, over an area about 20 inches by 48 inches, 6-8 inches above established seedlings, 15-hour days.

Seedlings don't seem to demand the dormant period (for everything I've tried) and thus when they go dormant for the first time they are about 16-20 months old, and have lots of root and food reserves. Summer or winter, I've got bulb seedlings (and cactus seedlings, etc.) growing in their "off" season.

The main thing I worry about during their time under lights is that I don't overwater them, or that house temperatures don't get too warm. Room temperature seems to work.

Cordially,

Hi Joe,
I have lots of species, G.tristis, caerulea, cardinalis, undulatus, bicolor (callianthus), alatus, maculatis, primulineus to name a few, and lots more added this year.

Most of these are from last year ans they are just beaking dormancy now. I have done nothing with them. When they went dormant in Autumn last year I left them in the greenhouse (unheated, but frost free)and witheld water, they are just starting to peep through the surface of the compost now, and I have started watering lightly, so I will now start adding a weak feed as well.

I don't have the facilities or space to grow under lights indoors, but seem to do OK - so far.

Hi,

I looked around a little more and it seems that almost any glad does fine with fertilizers added on a regular basis. Some use manure in the soil mix, some use 1/10 strength liquid fertilizer at every watering. So, I guess any approach works.

DeeDs1, I looked over your seeds to trade. You sure grow a lot of plants.