Just a note on this. While you're perfectly right that full spectrum isn't needed, if you're going to grow the plants indoors permanently or at least for a long time, it is far better to enjoy them under a full spectrum light than that purple light the red+blue gives. Tell me what "full spectr...

I shoud have referred to the download PDF - try Philips Horticultural LED Solutions. I worked with the previous incarnation and was looking at developing a custom ceramic lamp that produced only red-orange and a smidgeon of blue, specifically for horticultural use. But GE exited the UK and I was mad...

I haven't bought any greenhouse kit for ages, but have always used Tibshelf - simple, cheap, perfectly serviceable.

Aluminium water trays - far from ideal - they corrode, maybe not as bad as iron/steel, but they corrode pretty quick. I also doubt that the corner seams are welded, so they will not hold water.

Plant growth is most stimulated by light that is orange-red. The inter-nodal distance is controlled by blue light - too little and the inter-nodal distance becomes long (etiolation). Before LEDs, perhaps even so now on a commercial scale, growth was promoted using high-pressure sodium lighting (not ...

The first seems to be Fernwood Mikado. It was claimed by Rogers Weld, who produced the named hybrid, to be parva x suffruiticosa but after his death the claimed parent plants were checked and one found to be misidentified, so actual parentage is unknown. My plant here has flowered and offset, and is...