Project - Miniature Cactii Diaorama
PROJECT Â MINIATURE CACTII DIORAMA.
Hi. I am new here (and to cacti) and would appreciate some response from those with practical knowledge to avoid us making silly mistakes or wasting a lot of effort on ideas that are in fact not going to work!
Location 1: We live in the Brisbane Valley (30 miles due West of Brisbane). Temperatures vary between overnight frosts to low 20s in winter with moderate humidity; to around 10 to mid 30s (with periodic 3 or 4 day spells in the 40s) and quite high humidity during the summer. The Valley is a rain shadow area and does not enjoy a great deal of rainfall.
Location 2: We have a large (60Â x 12Â) NE facing veranda with plenty of space on it that we would like to make more use of. Lot of light but direct sunlight can be controlled if required. Wind is rarely an issue in this spot.
Project: Create an arid/desert landscape in miniature using local fossilized wood, sands and small pebbles for structural appearance, then populate it with a variety of cactii to form a collection but also compliment the picture rather than packing them in for the sake of it. A plastic tray (with drainage holes) would be used and the size would be around 8" deep x 4Â6" x 3Â (Dining table size).
The local supermarket regularly stocks ÂDanÂs Cactus that are attractive little ornamentals in a wide range of shapes, colours and sizes  but are all small. The information with each plant is however rather Spartan and they are not identified as to species.
Now some questions please:
1. Are there actually miniature cactii that stay really small? We do not want anything to get much over about 8". Or are we dealing with Âseedlings that may grow slowly but will potentially become large?
2. We have total control over soil and were thinking of a layered effect of a stony and/or sand topping, sand/potting mix mid level and a bottom level of coarse sand to ensure good drainage. Any comments/suggestions? Is soil alkalinity or acidity an issue with cactii?
3. We were thinking of de-potting the plants and putting them directly into the little ÂworldÂ. Is this practical or wise, alternatively should they be left in buried pots?
Any help or observations would be appreciated.
Thanks,
Phaedros
thefof Zone 8/9 UK
phaedrosOriginal Author