Plant Science

Scouts BSA · Merit Badge · Nature

Printable worksheet (PDF)

Plants feed us, clean the air, and make our world beautiful. You'll learn how plants work, grow some of your own, and explore what makes them thrive. It's a great badge for curious minds and gardeners.

Why it's worth it

Almost everything you eat, the cotton in your shirt, and the oxygen in your next breath come from plants. This badge shows you how they work, from the cells that capture sunlight to the bees that move pollen between flowers. You'll grow something yourself, learn to tell a native wildflower from an invasive weed, and see how farmers, gardeners, and scientists are working to feed more people with less water and land.

Start this week

  1. Plant a few bean or sunflower seeds in a cup this week and start a log with the date and what you see each day.
  2. Ask your Scoutmaster for the name of a Plant Science counselor, and send them a short message with a parent copied to set up a first meeting.
  3. Walk around your yard, block, or a park and list ten plants you see. Mark the ones you can't name yet.
  4. Read through the requirement 8 options with a parent and pick one that fits your space and season.

Plan ahead: Requirement 5 asks you to grow a plant, and the requirement 8 options can depend on the season. Plant early and work on the other requirements while it grows.

Requirements · 9

Every official requirement and part, numbered to match Scouting America, in plain language. Sign off against the official wording (opens in a new tab) (updated 2025).

Note: Collect plants only where it's allowed, take as little as you need, and follow local laws; photos or sketches can count instead of specimens.

  1. Requirement 1

    Draw a flowering plant, label at least five of its parts, and tell what each part does

    Tip: Pick a flower from your yard, with permission, and draw it while labeling each part.

    For example: Pick a flower like a lily or tulip, with permission, and cut it in half lengthwise. Draw and label the petals, sepals, stamens with anthers and filaments, and the pistil with its stigma, style, and ovary.

  2. Requirement 2

    Explain photosynthesis and why it matters, and give at least five ways people depend on plants

    Tip: Make a list of foods, clothes, and medicines that come from plants.

    For example: Explain photosynthesis simply: leaves use sunlight, water, and carbon dioxide to make sugar and release oxygen. Then list what you used today that came from plants: cereal, cotton shirt, wooden pencil, paper, and some medicines.

  3. Requirement 3

    Explain why honeybees and other pollinating insects matter to plants

    Tip: Watch bees and butterflies in a garden and notice which flowers they visit.

  4. Requirement 4

    Explain the effects of light, water, air, temperature, and pests on plants. Describe what soil is, what it does, and why it matters, including the texture, structure, and makeup of fertile soil and how to improve soil

    Tip: Grow two plants in different light or soil and compare how they do.

    For example: Grow two pots of beans, one in a sunny window and one in a dim corner, or one in garden soil and one in sand. Measure them each week and explain what light, water, and soil nutrients did.

  5. Requirement 5

    Tell how plants are propagated by seeds, roots, cuttings, tubers, and grafting, then grow a plant using one of those methods

    Tip: Try growing a plant from a seed or cutting, and keep a log of how it changes.

    For example: Explain how plants grow from seeds, roots, cuttings, tubers, and grafting. Then root a cutting from a pothos or coleus in a glass of water, plant it in soil once roots form, and keep a photo log of its growth.

  6. Requirement 6

    List by common name at least 10 native and 10 cultivated plants that grow close to home. Name five non-native invasive plants found locally and the harm they do, and tell how to prevent or control their spread without hurting people, wildlife, or the environment

    Tip: Walk around your neighborhood with a field guide and sort plants into native, cultivated, or invasive.

    For example: Make three lists from a neighborhood walk: native plants like a local oak or wildflower, cultivated plants like tomatoes or roses, and invasive plants listed for your state. Your extension office or state invasive list can help.

  7. Requirement 7

    Careers or hobbies. Choose 1 of 2

    Tips for this section: Talk with a gardener, farmer, or county extension agent about plant careers.

    1. Requirement 7a

      Research one career related to plant science: training and education, costs, job outlook, pay, duties, and advancement. With a parent's or guardian's permission, you may search online or at a library, interview a professional, or visit a workplace. Discuss your findings and what makes it interesting with your counselor

    2. Requirement 7b

      Research how plant science skills could become a hobby or part of a healthy lifestyle, including training, costs, and groups that support it. Discuss with your counselor the short- and long-term goals you might set

  8. Requirement 8

    Specialty option. Choose 1 of 3

    Tips for this section: Choose the option that interests you most and plan time for it to grow.

    1. Requirement 8a

      Agronomy

      1. Requirement 8a1

        Describe how a seedbed is prepared

      2. Requirement 8a2

        Build a seed germination tester and use it on 50 seeds each of four of these: wheat, rye, barley, rice, corn, cotton, soybeans, alfalfa, or clover. Work out what percentage of the seeds are alive

      3. Requirement 8a3

        For corn, small grains, and cotton, explain one major insect pest and one major disease that harm each. Collect and name five local weeds that compete with crops, and tell how to control them without hurting people, wildlife, or helpful insects

      4. Requirement 8a4

        On a U.S. map, mark the main growing regions for corn, cotton, forage crops, small grains, and oil crops, and explain how each region's climate and location make it a top producer

      5. Requirement 8a5

        Crop alternative. Choose 1 of 5

        1. Requirement 8a5a

          Corn

          1. Requirement 8a5a1

            Grow a plot of corn, have your counselor inspect it, and record the seed variety or experimental code number

          2. Requirement 8a5a2

            Describe today's commercial corn-farming methods and how corn adds to our food and fuel supply

          3. Requirement 8a5a3

            Describe one insect that harms corn, how it affects the crop, and how it's controlled

        2. Requirement 8a5b

          Cotton

          1. Requirement 8a5b1

            Grow a plot of cotton and have your counselor inspect it

          2. Requirement 8a5b2

            Describe today's commercial cotton-farming methods, how cotton fiber and seed are used, and the crop's economic value

          3. Requirement 8a5b3

            Describe one insect that harms cotton, how it affects the crop, and how it's controlled

        3. Requirement 8a5c

          Forage crops

          1. Requirement 8a5c1

            Collect, count, and label display samples of broadleaf weeds, legumes, annual grasses, and perennial grasses, and tell how each grass and legume is used. Log where you found each sample and share the log with your counselor

          2. Requirement 8a5c2

            Explain how legumes can enrich soil and how they can sometimes deplete it, and how livestock can enrich or deplete soil

          3. Requirement 8a5c3

            Name five plants that are poisonous to livestock, and tell the different ways forage crops are used to feed livestock

        4. Requirement 8a5d

          Small grains

          1. Requirement 8a5d1

            Give production figures for small grain crops for the latest year available in the U.S. Statistical Report or the Agricultural Statistics Handbook

          2. Requirement 8a5d2

            Help harvest a grain crop. Tell how to cut harvesting losses and describe modern methods for growing one small grain crop

          3. Requirement 8a5d3

            Visit a flour mill, grain elevator, cereal plant, or feed or seed company and talk with the operator. Take notes, describe how they process grain, and share what you saw with your patrol, troop, or class

        5. Requirement 8a5e

          Oil crops

          1. Requirement 8a5e1

            Grow a plot of soybeans and have your counselor inspect it

          2. Requirement 8a5e2

            Describe modern large-scale commercial soybean growing and how soybeans add to our food supply

          3. Requirement 8a5e3

            Explain why a hard frost can hurt soybeans right after they come up

    2. Requirement 8b

      Horticulture

      1. Requirement 8b1

        Visit a public garden, arboretum, retail or wholesale nursery, production greenhouse, or conservatory greenhouse, and tell what you learned there about horticulture

      2. Requirement 8b2

        Explain these terms: annual, perennial, evergreen, deciduous, cultivar, habit, texture, ultimate size, native habitat, hardiness zone, shade tolerance, moisture requirement, pH, and disease resistance. Look up your hardiness zone and name 10 landscape plants you like that fit your climate, by common and scientific name

      3. Requirement 8b3

        Propagation, pruning, or planting. Choose 1 of 4

        1. Requirement 8b3a

          Explain how vegetative and sexual propagation differ and some horticultural advantages of each, then start a plant from a graft or a stem or root cutting

        2. Requirement 8b3b

          Move 12 seedlings or rooted cuttings into larger containers and grow them for a month or more

        3. Requirement 8b3c

          Show good pruning methods and explain why pruning matters

        4. Requirement 8b3d

          With permission, properly plant a tree or shrub in a suitable spot

      4. Requirement 8b4

        Landscape design

        1. Requirement 8b4a

          Explain why good landscape design matters, along with choosing plants that fit a site's conditions

        2. Requirement 8b4b

          Tell why you need to know how large a plant will grow

        3. Requirement 8b4c

          Tell why a slower-growing landscape plant is sometimes a better pick than a faster-growing one

      5. Requirement 8b5

        Horticulture alternative. Choose 1 of 4

        1. Requirement 8b5a

          Bedding plants

          1. Requirement 8b5a1

            From seed or cuttings, grow bedding plants that suit your region in flats or pots, using a manufactured soil mix. Tell what the mix contains and why you picked it

          2. Requirement 8b5a2

            Move the plants into a landscape bed and care for it through the end of the growing season. Record what you did and saw, materials used, and costs

          3. Requirement 8b5a3

            Demonstrate watering, weeding, mulching, fertilizing, and deadheading, and explain how each one helps your plants

          4. Requirement 8b5a4

            Describe some differences between gardening with annuals and with perennials

        2. Requirement 8b5b

          Fruit, berry, and nut crops

          1. Requirement 8b5b1

            Plant five berry plants, grapevines, or fruit or nut trees that suit your area, and fully care for them through one season

          2. Requirement 8b5b2

            Properly prune a tree, vine, or shrub, and explain why pruning is needed

          3. Requirement 8b5b3

            Demonstrate one kind of graft and tell why it's useful

          4. Requirement 8b5b4

            Describe how a fruit, nut, or berry crop gets processed before people use it

        3. Requirement 8b5c

          Woody ornamentals

          1. Requirement 8b5c1

            Plant at least five trees or shrubs in a landscape and fully care for them for one growing season

          2. Requirement 8b5c2

            Properly prune a tree or shrub, and explain why pruning is needed

          3. Requirement 8b5c3

            List 10 more trees (beyond those from requirement 6) with common and scientific names, and explain to your counselor how each one is used in landscaping

          4. Requirement 8b5c4

            For each type of tree or shrub, describe its size, texture, color, flowers, leaves, fruit, hardiness, growing needs, and any special features that make it attractive or interesting

          5. Requirement 8b5c5

            Tell five ways trees make our environment better

        4. Requirement 8b5d

          Home gardening

          1. Requirement 8b5d1

            Design and plant a garden or landscape of at least 10 by 10 feet

          2. Requirement 8b5d2

            Plant 10 or more kinds of plants in your garden, explain why you picked those vegetable and flower varieties, and care for the garden for one season

          3. Requirement 8b5d3

            Demonstrate pruning, pest management, fertilizing, composting, mulching, weeding, watering, staking, and soil preparation, and tell why each is used

          4. Requirement 8b5d4

            Name four kinds of things you could add to make your home landscape or a park better for birds and wildlife. List 10 native plants in your area that help birds and wildlife, by common and scientific name

    3. Requirement 8c

      Field botany

      1. Requirement 8c1

        Visit a natural area near home, such as a park, forest, or Scout camp, and do 8c1a through 8c1c while there

        1. Requirement 8c1a

          Find which plant species are largest and which are most plentiful, and note whether they shade other plants

        2. Requirement 8c1b

          Use maps, books, or the internet to describe environmental factors that may affect which plants grow there: climate, latitude, geology, topography, hydrology, soil type and pH, and air and soil temperature

        3. Requirement 8c1c

          Record how the plants differ at a forest edge, beside water, where there was a fire, or along a road or railroad

      2. Requirement 8c2

        Pick a study site of at least 100 by 100 feet. List 10 trees or shrubs (woody plants) and 10 non-woody plants there, and find out which are native and which are exotic

      3. Requirement 8c3

        Explain how plant identification keys work, then use a simple one to name 10 kinds of plants beyond those from requirement 5. Explain how common and scientific names differ and why scientific names matter

      4. Requirement 8c4

        With permission, collect 10 different common local plants, then identify, press, mount, and label them. Tell why voucher specimens are important for recording a field botanist's finds

      5. Requirement 8c5

        Get a list of your state's rare plants. Tell what your state is doing to protect them and its natural areas, and write a paragraph about one of those rare plants

      6. Requirement 8c6

        Field botany alternative. Choose 1 of 5

        1. Requirement 8c6a

          Tree inventory

          1. Requirement 8c6a1

            Identify the trees in your neighborhood, a park, part of your town, or a Scout camp

          2. Requirement 8c6a2

            Document your inventory by collecting, pressing, and labeling leaves, flowers, or fruits

          3. Requirement 8c6a3

            List the tree types by scientific and common name. Record how many trees you saw and their size (diameter 4½ feet above ground), and find the largest of each species in your area

          4. Requirement 8c6a4

            Show two or more people how to identify at least five kinds of trees or shrubs with a leaf or twig key

        2. Requirement 8c6b

          Transect study

          1. Requirement 8c6b1

            Visit two sites, at least one different from your Field Botany requirement 1 site

          2. Requirement 8c6b2

            Use transects at least 500 feet long to compare the two different types of plant communities

          3. Requirement 8c6b3

            At each site, record the soil and other influencing factors, then (a) identify every tree within 10 feet of your transect line and (b) measure each one's diameter 4½ feet above the ground, mapping and listing each tree. Then graph or chart your results

        3. Requirement 8c6c

          Nested plot

          1. Requirement 8c6c1

            Visit two sites, at least one different from your Field Botany requirement 1 site

          2. Requirement 8c6c2

            Lay out nested plots to take inventory of two different types of plant communities

          3. Requirement 8c6c3

            At each site, record soil and other influencing factors, then: (a) identify, measure, and map every tree in a plot 100 by 100 feet (diameter at 4½ ft for trees over 3 in.); (b) identify and count every tree and shrub in a 10-by-10-foot plot inside it; (c) identify and count all plants in a 4-by-4-foot plot inside that, estimating cover for ones you can't tell apart. Graph or chart the results

        4. Requirement 8c6d

          Herbarium visit

          1. Requirement 8c6d1

            Write ahead to set up a visit to an herbarium at a botanical garden, park, or university, OR visit an herbarium website with your parent's or guardian's permission

          2. Requirement 8c6d2

            Tell how the specimens are organized and how researchers use them. If you can, look at voucher specimens of a plant that's rare in your state

          3. Requirement 8c6d3

            Describe how a voucher specimen gets mounted and readied for long-term storage, and how to handle specimens so they don't get damaged

          4. Requirement 8c6d4

            Tell about the tools and references botanists use in an herbarium

        5. Requirement 8c6e

          Plant Conservation Organization Visit

          1. Requirement 8c6e1

            Write ahead to set up a visit to a private conservation group or government agency that works to protect rare plants and natural areas

          2. Requirement 8c6e2

            Tell about the organization's work to study and protect rare plants and natural areas

          3. Requirement 8c6e3

            If you can, visit a nature preserve the organization manages, and tell about land management practices there, such as controlled burns or efforts to remove non-native invasive plants or other dangers to native plants

  9. Requirement 9

    Discuss why Leave No Trace's Seven Principles and the Outdoor Code matter in plant science, and explain how you followed them in natural areas while observing, collecting, and identifying plants

    Tip: Talk about how to enjoy plants in the wild without picking or trampling them.

Places to visit

Ask an adult to set it up, and go with your family, den, patrol, or crew.

  • A botanical garden or arboretum

    You can see plants from many climates and often find labeled native and invasive species side by side.

    How: Go with your family or patrol, check the website for free days, and ask the education office whether they offer youth tours.

  • A farm, orchard, or community garden

    Growers can show you how they plant, water, fight pests, and harvest on a real scale.

    How: A parent or leader can contact the farm or garden organizer and ask for a short tour. Community gardens often welcome volunteers.

  • Your county extension office

    Extension experts and master gardeners can identify plants, test soil, and answer questions for free.

    How: A parent can call or email the office and ask about youth programs, plant clinics, or 4-H activities.

Where it can lead

  • AgronomistHelps farmers grow better crops and protect their soil; usually needs an agriculture degree.
  • HorticulturistGrows and cares for plants in nurseries, gardens, and greenhouses.
  • BotanistStudies plants in the lab and in the field, from rare wildflowers to crop genetics.
  • Landscaper or groundskeeperPlants and maintains parks, campuses, and yards; many learn on the job.
  • Plant inspectorChecks shipments and farms for pests and diseases for state and federal agencies.

Ask yourself

  • Which plant do you depend on most without thinking about it?
  • What surprised you about how plants grow or reproduce?
  • What went wrong with your growing project, and what would you try differently?
  • How did learning about invasive plants change the way you see your neighborhood?
  • What's one plant you'd like to grow next, and why?

Good questions to ask a county extension agent or master gardener

  • Which invasive plants cause the most problems around here?
  • What do most beginners do wrong when they start a garden?
  • How do you figure out what a sick plant needs?
  • Which native plants would help pollinators in a yard like mine?
  • What kind of work do plant scientists do in our state?

Helpful reads

For leaders & parents

  • Start a small troop garden or planting service project.
  • Connect scouts with a county extension office or master gardener.

People & places that can help

Into this? Explore more

Tips, examples, and questions are ideas from experienced leaders, not extra requirements. Your unit leader or counselor decides when a requirement is complete.