Helianthus Annuus

Helianthus Annuus Sunflower (Su,D,AE,N) 2 – 8 ft H x 2 – 4 ft W. Annual. Bright yellow ray flowers surround a composite (many flowered) center. Blooming mid summer to fall. Great plant to bring in wildlife. Blooms:  Mid Summer to early fall  (Su) Moisture: Dry  (D) Soil Type: All soil types when local ecotype… Continue reading Helianthus Annuus

Sunflowers, a Study in Solar Efficiency

there's 137 degrees between florets in there somewhere.

How do you gather the most sun in the least amount of space? Who does it better than anything else?  What else than a flower named for it, a sunflower. Math Engineer, Alexander Mitsos, from MIT used numerical optimization to find  the most efficient space design for concentrating solar power plants, like Gemsolar in Spain.  In… Continue reading Sunflowers, a Study in Solar Efficiency

Seed Starting 2010

Colorado has a fairly short growing season, so many of the plants that would normally be started outdoors after danger of last spring frost I chose to start indoors. Getting the timing right is always a challenge. If you start too soon, plants will tend to be leggy and will have a hard time adjusting… Continue reading Seed Starting 2010