My Vegetables Are Too Hot! by Nancy Shepard

Shade screen over vegie garden. Photo by Nancy Shepard

With recent hot weather hitting 96 degrees before 10 am, I knew my vegetable garden would struggle. I remembered a presentation on growing vegetables in Colorado by Darrin Parmenter with CSU Extension in La Plata County several years ago. I was surprised to learn that tomato plants fail to produce if daytime temperatures get above 90 degrees by 10 am. He said the blossoms would abort their attempt to produce fruit. He also said that peppers were similar to tomatoes with mild peppers' optimal temperatures between 65-90 degrees and hot peppers' optimal temperatures between 75-90 degrees. And even my heat-tolerant lettuces will start to bolt and become bitter when temperatures are above 80 degrees.

What Do Our Master Gardeners Grow? Part 2

 

From Master Gardener Pam:

Plants I'll always plant:  Perennials, low water, deer and rabbit resistant, attract pollinators and hummingbirds. Butterfly weed (asclepias tuberosa,) Hyssop (hyssopus officinalis,) Caryoperis, Lavender cotton (santolina chamaecyparissus,) Kannah Creek buckwheat (eriognum umbellatum v. aureum,) Penstemon, Sedum, Yarrow (achillea,) Lavender, Tickseed (coreopsis,) Salvia, Rudebeckia, Pincushion flower, Blue fescue (Festuca glauca,) Dwarf fragrant sumac (rhus aromatic,) Lemon lace elderberry (sambucus racemosa,) Hostas, Sweet woodruff (gallum ororatum,) Roses – I usually look for zone 4 or Canadian.  Morden Sunrise and Dainty Bess from Hi Country Roses are favorites.

Plants I'm itching to try:  Salvia ‘maraschino’, Lead plant (amorpha canescens),  Englemann’s daisy (englemannia peristenia)

Forget about it:  Oregano,  New Mexican privet