Tomato Hornworm by Janice Hau https://padlet.com/349141027/bld5v26cmfky By Janice Hau en-us 2019-04-04 16:46:46 UTC 2024-10-13 07:32:18 UTC hello@padlet.com 1. What is Tomato Hornworm? 349141027 https://padlet.com/349141027/bld5v26cmfky/wish/348622185
  • - The Tomato hornworm is a large caterpillar known to be one of the most detrimental pests to tomato, eggplant, pepper and potato plants. 
  • - Due to their bright green colour and their tendency to hide on plant stems, it can be very difficult to spot one of these pests with the naked eye.
    • ]]>     2019-04-04 16:52:09 UTC https://padlet.com/349141027/bld5v26cmfky/wish/348622185     2.How can I know my plants are infected by Tomato Hornworm? 349141027 https://padlet.com/349141027/bld5v26cmfky/wish/348624379 If you see...
    • Tomato, eggplant, pepper and potato plant leaves being completely consumed
    • Bite marks on small stems from the plants

    • Dark green droppings present on the top of leaves for these vegetables
    ]]>     2019-04-04 16:55:48 UTC https://padlet.com/349141027/bld5v26cmfky/wish/348624379     (Picture)Tomatoes that were eaten by the Tomato Hornworms 349141027 https://padlet.com/349141027/bld5v26cmfky/wish/348626455 They are very harmful to tomatoes, and they also eat other plants like eggplant, pepper and potato plant]]> 2019-04-04 16:59:16 UTC https://padlet.com/349141027/bld5v26cmfky/wish/348626455 (Picture) Tomato Hornworm (Moth) 349141027 https://padlet.com/349141027/bld5v26cmfky/wish/350459198 2019-04-10 17:06:12 UTC https://padlet.com/349141027/bld5v26cmfky/wish/350459198 3. Introduction about Tomato Hornworm(Picture: Tomato hornworm larvae) 349141027 https://padlet.com/349141027/bld5v26cmfky/wish/350462510
  • Scientific name: Manduca quinquemaculata (Lepidoptera: Sphingidae)
  • It is native to United States, and is commonly found throughout north America
  • Does not typically reach economically damaging levels on commercial farm. However it is still harmful for gardening plant
  • Tomato hornworms eat only on solanaceous plant, such as tomato. However, their larvae will also attack eggplant, pepper and potato


    • ]]>     2019-04-10 17:12:21 UTC https://padlet.com/349141027/bld5v26cmfky/wish/350462510     APA citation 349141027 https://padlet.com/349141027/bld5v26cmfky/wish/350971071 Home Page. (n.d.). Retrieved from http://www.pestblog.ca/common-garden-pests-in-ontario/
    Mckay024. (2015, June 09). Tomato Hornworm. Retrieved from https://www.vegedge.umn.edu/pest-profiles/pests/tomato-hornworm
    Tapq. (2009, June 10). Tomato Hornworm - Large Green Tomato Plant Eating Caterpillar. Retrieved from https://www.youtube.com/watch?v=gRBQpvH_NcM

    ]]>     2019-04-11 20:57:10 UTC https://padlet.com/349141027/bld5v26cmfky/wish/350971071     4.Biology and life cycle 349141027 https://padlet.com/349141027/bld5v26cmfky/wish/350972412
  • Eggs of the tomato hornworm are deposited singly on both the lower and upper surface of leaves in late spring
  • The eggs hatch in six to eight days and are oval, smooth, light green to yellow. Also it is usually measure 0.10cm in diameter
  • Larvae are appear in pale green with white and black marking. The first instar is yellow to no marking, later the instars develop into V-shaped.
  • A black marking on the last segment fives the name “hornworm”


  • By early fall, the pupae will remain in the soil all winter and emerge as a moth the following spring. 

    • ]]>     2019-04-11 21:03:47 UTC https://padlet.com/349141027/bld5v26cmfky/wish/350972412     5.Damage 349141027 https://padlet.com/349141027/bld5v26cmfky/wish/350974943
  • The larva damages and feeds initially on the upper portions of leaves, leaving behind dark green or black droppings
  • They blend in with the plant, so it is usually unnoticed until most of the damage is done.
  • Late instar larvae can destroy leaves as well the fruit.


    • ]]>     2019-04-11 21:15:30 UTC https://padlet.com/349141027/bld5v26cmfky/wish/350974943     6.How to get rid of them?(Using IPM) 349141027 https://padlet.com/349141027/bld5v26cmfky/wish/350976547 Cultural control
    • Handpicking the hornworms from infected plant is safe and effective option in small planting
    • If you handpick it carefully, it can reduce the population of tomato hornworm by 90%
    Biological control
    • There are many natural factors that can help to control the hornworm population
    • The egg stage and early larvae are often prey for ladybugs and green lacewings.
    ]]>     2019-04-11 21:24:09 UTC https://padlet.com/349141027/bld5v26cmfky/wish/350976547     Video:Tomato Hornworm - Large Green Tomato Plant Eating Caterpillar 349141027 https://padlet.com/349141027/bld5v26cmfky/wish/350978513 https://www.youtube.com/watch?v=gRBQpvH_NcM

    ]]>     2019-04-11 21:35:28 UTC https://padlet.com/349141027/bld5v26cmfky/wish/350978513