​Introduced in 1968 by Cornell University, 'Marketmore' is a beautiful, dark green cucumber that's ready to pick when 6"–8" long. Fruits keep their size and shape even under poor weather conditions unlike other varieties that may curl and become misshapen. The 4'–6' long vines continue to produce with regular picking. Disease resistant.

Here's the information from the source of this seeds (https://www.burpee.com/vegetables/cucumbers/cucumber-marketmore-76-prod002098.html)

How to Sow and PlantSowing Seed Indoors:
  • Direct sowing is recommended, but to get a head start you can grow cucumbers indoors 3-4 weeks before the last frost in individual biodegradable pots indoors. Sow 2-3 seeds per pot.
  • Sow seeds ½  inches deep in seed-starting formula
  • Keep the soil moist at 70 degrees F
  • Seedlings emerge in 7-14 days
  • As soon as seedlings emerge, provide plenty of light on a sunny windowsill or grow seedlings 3-4 inches beneath fluorescent plant lights turned on 16 hours per day, off for 8 hours at night. Raise the lights as the plants grow taller. Incandescent bulbs will not work for this process because they will get too hot. Most plants require a dark period to grow, do not leave lights on for 24 hours.
  • Seedlings do not need much fertilizer, feed when they are 3-4 weeks old using a starter solution (half strength of a complete indoor houseplant food) according to manufacturer’s directions.
  • Thin to one plant per pot.
  • Before planting in the garden, seedling plants need to be “hardened off”. Accustom young plants to outdoor conditions by moving them to a sheltered place outside for a week. Be sure to protect them from wind and hot sun at first. If frost threatens at night, cover or bring containers indoors, then take them out again in the morning. This hardening off process toughens the plant’s cell structure and reduces transplant shock and scalding.
Sowing Directly in the Garden:
  • Sow in directly in the garden in fertile, warm soil after danger of frost has passed. Cucumber seeds will not germinate in soil colder than 60 degrees.
  • Sow seeds 3 inches apart in groups of 4-6. Cover with 1 inch of fine soil.
  • Space groups 19 to 26 inches apart each way.
  • Keep evenly moist.
  • Seedlings emerge in 7-14 days.
  • Thin to 3 or 4 strongest seedlings in each group when they are 1-2 inches high.
How to Grow
  • Keep weeds under control during the growing season. Weeds compete with plants for water, space and nutrients, so control them by either cultivating often or use a mulch to prevent their seeds from germinating. 
  • Cucumbers have a shallow root system, mulches help retain soil moisture and maintain even soil temperatures.
  • Keep plants well-watered during the growing season, especially during dry spells. Plants need about 1-2 inches of rain per week during the growing season. Use a rain gauge to check to see if you need to add water. It's best to water with a drip or trickle system that delivers water at low pressure at the soil level. If you water with overhead sprinklers, water early in the day so the foliage has time to dry off before evening, to minimize disease problems. Keep the soil moist but not saturated.
  • As plants grow mulch to control weeds, keep fruits off the ground and conserve moisture
  • Do not move the vines, they are easily injured.
  • Monitor for pests and diseases. Check with your local Cooperative Extension Service for pest controls recommended for your area.
  • When cucumber seeds are direct-sown along a cucumber fence, vines can be trained to grow upright for easy picking and to save space for other plants to grow. Good companion vegetable plants are direct-sown radishes, bush snap beans, and transplants of compact herbs, peppers, eggplants and tomatoes. Attract bee pollinators by planting daisies such as sunflowers, cosmos, zinnias and coneflower, and mints such as bee balm, sage, oregano and lavender. More bees mean more chances flowers will be pollinated and develop into fruits.
Harvest & Preserving
  • Like most vegetables, cucumbers are tender and tastiest when harvested young before their seeds are fully developed.
  • Slicing cucumber varieties are generally ready for harvest when about six to eight inches long; pickling cucumber types at three to five inches- both in about 50-60 days from seeding.
  • To avoid damage cut fruit from the vine rather than pull
  • Don't allow the fruits to become overripe on the vine as this signals to the plant that the seed-development process is nearly complete and it will shut down.
  • Keep mature cucumber fruits picked to encourage further production. During hot weather cucumbers grow very fast, you may need to harvest every day.
  • Harvest the cucumber fruits early in the morning before the sun hits them for the best flavor and texture.
Type: Slicing
Days To Maturity: 63 days
Fruit Size: 6-8 inches
Sun: Full Sun
Direct Sow
Sow Time: After Last Frost
Thin 24 inches

Now, Let's get it!

9/7/2020. About a week ago, I planted seeds under the sunflower stalk, hoping that cucumber plants will use Sunflower stalk to climb up. I already harvested sunflowers, so instead of unplug them from the roots, I decided to use them! Let's see if this method work! I looked up companion planting, and it says Sunflowers and cucumbers grow well together. Today, I found them popped out of the ground! Let's start the clock!