Customer Service Hours
Mon-Fri 8-4 MST
Features
Family
Cucurbitaceae
Native
Africa
Life Cycle
Annual
Plant Height
Vine
Further Information
Growing Conditions
Frost Sensitive
About ["Watermelon"]
Citrullus lanatus
Mountain Sweet Yellow' produces oblong fruits that average 20–35 pounds. Outer rind is dark green with lighter green stripes. The yellow interior is firm and sweet.
Planting ["Watermelon"]
Plant Spacing
2–3 seeds per mound
Light Required
Full sun
Plant Height
Vine
Planting Depth
½"
Coverage & Planting Details
| Coverage | This packet sows up to 5 mounds. |
|---|---|
| Row Spacing | 4'–6' apart |
| Seed Depth | ½" |
| Seed Spacing | 2–3 seeds per mound |
| Thinning | When 3 leaves, thin to 1 plant per mound |
| Germination | 5–10 days |
| Start Indoors | Not recommended except in very short growing seasons, 2 to 4 weeks before transplanting. Roots are sensitive to disturbance; sow in biodegradable pots that can be planted directly into the ground. Transplant when soil temperature is at least 60°F. |
| Direct Sow | RECOMMENDED. 1 to 2 weeks after your average last frost date, and when soil temperature is 70°–90°F. |
| Growing & Harvesting | It can be tricky to know exactly when a watermelon is ripe and ready to pick. First, know the number of "days to harvest" and begin checking fruits as harvest date draws closer. Signs to look for are: (1) the bottom of the melon (where it lies on the soil) turns from light green to a yellowish color; (2) the surface color of the fruit turns dull; (3) the skin becomes resistant to penetration by the thumbnail and is rough to the touch; and (4) light green, curly tendril on the stem near the point of attachment of the melon is brown and dry. All of these indicators may not necessarily occur at the same time. |
Find Your Frost Date & Grow Zone
Average First Frost Date
October 19
Average Last Frost Date
May 19
Your Hardiness Zone is
5b
Send Your Recommendation
Total 5 star reviews: 8 Total 4 star reviews: 2 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
Which best describes you as a gardener?
10 reviews
- AmandaVerified BuyerRated 4 out of 5 stars11/27/25Overall Great
Tasted great and sweet, but the seeds were just too tough for me to find pleasant to chew, and too many to spit out. For that reason, I cant give the full 5 stars. These were large melons, easily 25+ lbs. I enjoyed growing these but will skip out next year
Which best describes you as a gardener? IntermediateBIBotanical Interests11/27/25Hey Amanda,
Thank you so much for the 4-star review and for sharing your honest experience with the Mountain Sweet Yellow Watermelon Seeds! We're thrilled to hear that you grew some absolutely massive melons - 25+ pounds is seriously impressive! - and that the flavor was great and sweet.
We totally understand your feedback about the seeds. Mountain Sweet Yellow is an heirloom variety that does tend to have those larger, more prominent seeds compared to some of the newer seedless or thin-seeded varieties. For folks who really want to enjoy eating the whole bite without dealing with seeds, it can definitely be a bit much having to navigate around them or spit them out constantly.
It sounds like you had fantastic growing success with these though! Getting watermelons that size shows you really nailed the growing conditions. The flavor being sweet and delicious is exactly what we love to hear about this variety - it's just that the seed situation wasn't quite right for your eating preferences.
Your feedback about the seed texture and quantity will be really helpful for other gardeners who are trying to decide if this variety is the right fit for their taste preferences and eating style.
Keep on growing 🌻️
- StephanieTX, United StatesRated 5 out of 5 stars10/14/25Love the seeds
2 of mines that I grew with these seeds. Still have some growing. 16 of them. I didn't use any fertilizer just soil and water.
Which best describes you as a gardener? BeginnerWho do you grow for? YourselfHow do you prefer to grow? In GroundBIBotanical Interests10/15/25Hey Stephanie,
Thank you so much for this fantastic 5-star review! "Love the seeds" is exactly what we love to hear about Mountain Sweet Yellow Watermelon Seeds - and wow, those gorgeous watermelons in your photos are absolutely stunning!
We absolutely love that you achieved such incredible success with just the basics - soil and water!
Your no-fertilizer success and beautiful harvest will be so inspiring for other gardeners who want to discover just how rewarding and easy-growing Mountain Sweet Yellow Watermelon Seeds can be for creating amazing homegrown watermelon harvests with minimal inputs!
Keep on growing 🌻️
- LauraAL, United StatesVerified ReviewerRated 5 out of 5 stars5/3/25Fantastic!
I am a beginner gardener and I’ve never grown anything before but I was determined to grow yellow watermelons this year. It’s going great! I have three watermelons growing from three different seeds - it’s been a long journey but it’s going well. I would recommend these seeds to anyone who is determined to grow yellow watermelon.
Which best describes you as a gardener? BeginnerWho do you grow for? YourselfHow do you prefer to grow? ContainerBIBotanical Interests7/24/25Hey Laura,
This is SO exciting! We're absolutely thrilled to hear that you're having such success with your first gardening adventure. Three watermelons from three seeds - that's fantastic! Yellow watermelons are definitely worth the wait, and it sounds like you're doing everything right. Your determination is really paying off and we can't wait for you to taste those sweet, sunny fruits. Thank you for sharing your journey with us! Keep on growing 🌻️
- Jeremiah P.Verified BuyerRated 5 out of 5 stars5/20/245 Stars
These seeds where the fastest seeds to sprout that I ever grown
Which best describes you as a gardener? Intermediate - CarlVerified BuyerRated 5 out of 5 stars3/26/245 Stars
Came pretty quick, thank you.