The secret of flourishing house plants

I only have green fingers outside of the house, or so I thought before buying Vårkulla. This fake olive tree was what I started with (and it still looks good if I just remember to dust it every now and then).But then I found out that the secret of keeping house plants alive and well is as follows: no water, very little light and just a touch of warmth for five days a week. At home I have no hope of keeping any flowers alive but at Vårkulla they flourish so this must be true.