Orchids Buds Won't Bloom

[OrchidsMama]

Hello All,

I need help with my orchids' buds not blooming. I have a few different store bought orchids. All of them are at reblooming stage and have buds. One has a large normal size bud that's turning black. The other orchids' buds stopped growing at pea's size. They have been like these for 3 weeks.

Info:
Indoor
Temp at 68F, and started lowering 10F starting 2 days ago.
Humidity - I put like 10 plants all together
Sunlight - limited in zone 7, indirect sunlight for 7 hours minimum. Additionally, I provide 3 extra hours of artificial light from 5-8pm.

[Cym Ladye]

Too much heat or a change in temperature will cause buds not to open or stop growing.

[Paphluvr]

Grouping all your orchids together can help raise the humidity slightly but your humidity overall could still be low, especially during winter if grown indoors in a Northern region. Also, is your grow area free of drafts?

[nemesis]

Welcome to the OB. you will find answers to all your questions here.
Kelly

[estación seca]

Welcome!

Many things can cause bud blasting: Too-low or too-high temperatures; variable temperatures; low humidity; a hot or cold draft, like being near a window or under an air vent; not enough water; infestation by tiny insects called thrips.

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