On the Subject of Seeds

Patricia Larenas loves seeds. With a background in horticulture and art, her work aims to inspire appreciation for this life stage of plants. She also works directly with seeds, helping others grow edible gardens and save seeds. This project explores the germination and growth of a Hopi red lima bean (Phaseolus lunatus). The following is written by Patricia.

Pala hatiko (Phaseolus lunatus) is the Hopi name for this variety of lima bean. Lima beans originated in South America in the area now known as Peru, and were named after the Peruvian city of Lima.

Genetic Diversity

I’ve drawn three beans to show the diversity of the seed coat color: 1. solid red-brown, 2. red-brown with dark streaks and spots, and 3. mostly dark with red-brown streaks and spots. The diversity in color of the beans is an indication of  the genetic diversity in this variety. This is an advantage because genetic diversity means that this bean could have more ability to adapt to different environments.

For example, lima beans usually like to grow in hot areas like the Southwestern and Southern USA . My garden in the Bay Area is cooler than those areas, so with its ability to adapt, this bean may do just fine in my garden under cooler conditions. By growing it for a few years and saving seeds from the most vigorous and productive plants, I can create my own land race that is adapted to growing well in my area.

Germination

All viable seeds are alive. By viable I mean they have the ability to grow once they germinate.  Conditions that kill seeds are: exposure to warm or hot temperatures, old age, exposure to light, humidity that can cause mold to grow or seeds to rot, and diseases. Seeds can stay dormant, but alive, while they are waiting for the proper conditions that will induce them to germinate. Germination is the process by which a seed begins to sprout and develop into a seedling. The proper conditions for seeds to germinate vary greatly for different types of seeds and they have to do with temperature, moisture, and exposure to light or darkness. Additionally, some seeds need a period of exposure to cold, usually about the temperature of your refrigerator (called stratification) before they germinate. This could be from a few weeks to a few months. Other seeds need to have their seed coats abraded or damaged (called scarification) a bit so that moisture can penetrate to begin the germination process. Vegetable seeds rarely need stratification or scarification, but some flower seeds do.

Bean Seeds

Lima bean seeds need soil temperatures of at least 750 F to germinate (up to 900F), besides moisture (water). As shown in my drawings, first, the root radicle grows out of the seed, and the seed coat begins to retract as the bean swells with growth. The seed leaves, or cotyledons, are the two halves that make up the bean seed, these start to open up and the true leaves grow out from in between them, while the radicle develops into a stem and roots. The little seed is now a seedling ready to grow into a full sized plant that will flower and make lima beans!

Patricia Larenas is a featured artist in the 2020 exhibition of science illustration, The Art of Nature.
Find Patricia’s art on Instagram @plarenas_onpaper
See her website for tips on growing your veggie garden and saving seeds http://www.urbanartichoke.com/

Summer Solstice Sun Prints

Happy Summer Solstice! What better way to celebrate than creating art with sunlight? Follow along and harness the power of the sun to create your own sun prints using objects found in nature, construction paper, and sunlight.

Astronomically, the June solstice marks the first day of summer for the Northern Hemisphere, but many cultures consider this event to signal midsummer. This year, solstice occurs at 2:34 p.m. PDT on Saturday, June 20, 2020, which is the exact moment that the Earth’s North Pole is leaning most toward the sun.

Materials:
Construction paper
Nature objects

Optional:
Saran wrap
Plexiglass
Tape
Scissors

  1. Place object(s) on construction paper. If your object is heavy, like a rock, move on to step two! If it is lighter, like a feather or leaf, you may want to tape it down (masking tape works best), or put a piece of saran wrap or plexiglass over the paper (glass won’t work because it will block the UV rays from the sun, which we need to make our prints). You can also cut paper into shapes and tape them to your construction paper.
  2. Place paper under the sun. Since we’re doing this on the solstice, we’ll have many hours of daylight — more than any other day of the year! Hopefully we also have sunny skies with few clouds, which will make our project go faster. If not, however, that’s okay. Just leave your paper out longer. Give your project at least two hours in the sun. Place your paper on the ground and make sure everything is secure so that the wind won’t blow anything away.
  3. Remove objects and enjoy your artwork! Why do you think the sun changed the color of the paper? Why did the paper not change color where the objects were placed?

Post by Marisa

How To Draw a Flower Video

Do you enjoy looking at flowers? What do you want to learn about flowers? Use this step-by-step guide to learn about the different parts of a flower through illustration. Afterwards you will be able to identify perfect and imperfect flowers.

Post by Elise

Nature Journal from Your Window

Spending time outside can help you feel connected to nature, but there are ways to connect to nature without leaving your house. Find a comfy spot to sit near a window and take 20 minutes to gaze out at the world. What will you notice during this time?  

Capture a moment in time out your window through writing, questioning, and drawing. For further instructions, follow along with the  activity guide.

Explore these other posts about journaling:

Post by: Elise

Lecture: Exploring Science Through Art

Art is essential to increasing scientific knowledge and inspiring conservation. This lecture from Andrea Dingeldein, a local artist and educator featured in the Museum’s 2020 exhibition of science illustration, The Art of Nature, explores science illustration, both historical and contemporary, and its importance as a tool to observe and connect with nature.

Andrea Dingeldein is a marine biologist, naturalist, and general lover of nature. Andrea’s focus is in marine illustration, but she enjoys drawing insects, reptiles, and any other creepy-crawlies she can get her hands on. She specializes in illustrations for peer-reviewed science articles and has published illustrations in Ecological Modeling and Bulletin of Marine Science. Other clients include NC Department of Marine Fisheries, Friday Harbor Laboratories, and Western Society of Naturalists. Explore her work.

Andrea has two pieces in our 2020 exhibition of science illustration, The Art of Nature. Explore the virtual exhibit.

Meet a Painting: Plovers in the Dunes by Megan Gnekow

Science Illustrator Megan Gnekow shares the story behind her piece, “Plovers in the Dunes,” featured in this year’s The Art of Nature exhibit.

This is an excerpt from a longer conversation with Megan hosted live on Facebook on April 10, 2020. Watch the full program here.

Sourgrass Natural Dye Video Tutorial

There’s more to sourgrass than its lip-puckering powers. Dig a little deeper with this natural dye video tutorial.

Sourgrass (Oxalis sp.) is a plant of extremes: children love its strong flavor, pollinators gorge on its abundant nectar, many adore its ability to overwhelm a field when in bloom, and many still detest the invasive qualities of some of its species. Oxalis pes-caprae, native to South Africa, has made itself comfortably at home in California, forming dense mats that outcompete native plant species for light and space.

Whether you love it or can’t stand it, sourgrass has an interesting hidden quality that is both useful and exciting: it dyes fabric a vibrant, neon, highlighter-yellow color. Watch our video tutorial to learn how to play with its pigment and explore more resources below:

Post by Marisa